The Walkers and their nest have got me puzzled this year. As you know, the Wings have also got me scratching my head, so it’s generally a perplexing time of year.
The benefits of watching several crow families over a number of years include (1) always having things to wonder about and (2) seeing the endless variety of crow story plot lines.
Mr. Walker, corvid matinee idol, June 8 2022
The story of the Walkers’ nesting season so far:
Unlike the Wings , who live on a street with a big tree canopy, the Walkers have smaller trees to work with, so I was able to see the location of their nest.
Wanda sitting on the nest, early May 2022
A slight wrinkle in the Walkers’ nesting plans appeared a few days after I took the previous photo. The City tree crew hung signs on every tree on their block announcing imminent trimming work.
I know the City crews struggle to keep up with all the maintenance work but I do hate to see the trees disturbed during nesting season. On behalf of Wanda, who was unable to get to a phone, I called and emailed the City and requested that they delay the work until later in the year. Somewhat to my amazement, the signs were removed the next day. Small victories!!
Things seemed to be coming along nicely with the nest. Last week I heard what sounded like at least one fledgling in the nest and Wanda was out and about collecting food with Mr. Walker. I was expecting little Walkers any day.
Instead, I was baffled to see Mr. Walker busily carrying twigs to the next tree down the street a few days later.
At first I wasn’t even sure it WAS Mr. Walker as, in the rain, he looked rather like a Mr. Pants impersonator!
But no — definitely Mr. Walker, as he proceeded to jog along beside me in his inimitable style. Here he was more recently, clearly working on the soft furnishings stage of Nest #2.
Confirming that something must have gone amiss with Nest #1 is the fact that Wanda has reverted to the early nesting season female behaviour of begging for food. They do this to get their mates into the habit of bringing them food when they’re confined to the nest incubating the eggs. Again, in this case.
Wanda adopts begging posture
Mr. Walker obliges with peanuts …
… having first thoughtfully dunked them in gutter water for extra succulence and flavour.
So there we are … I have no idea what befell of Nest #1.
It could have been any number of things … raccoons, cats, hawks, cars, operator error …
Sadly, it’s not uncommon, and clearly the Walkers are wasting no time in getting to work on a second go. The story, therefore, continues and we hope we have some new little Walkers before the summer is out.
Detail from Mr. Walker’s section of City Crow Stories, showing 2021 fledglings
The crow nesting season goes through various phases, some quiet, others much louder.
Right now we’re in a seemingly tranquil phase
All is secretive and low key as the parents try to keep the nest locations hidden from predators. Sometimes the game is given away when the female, sitting on the eggs, makes begging sounds to remind their mate to hurry up with the food delivery, but generally it’s as if the whole neighbourhood is made up entirely of of very quiet bachelor crows.
Marvin going solo while Mavis sits on the eggs, spring 2022
The mother crow will remain on the nest, incubating 2-6 eggs, for between two and three weeks. Once the eggs hatch, both parents will leave and return to the nest frequently to bring food. Another parental duty is carrying away the babies’ fecal sacs to keep the nest clean. A sure sign of hatched babies is seeing a poop-splattered adult crow — evidence of one of those sacs having failed in the disposal process. The love of a parent truly knows no bounds …
Mr. Walker on dad duty, Spring 2022
This is, of course, the calm before the storm. Soon things will start to get more exciting as dive bombing season begins.
This is such an issue in Vancouver that, a few years back, a Langara College professor created an open-source Geographic Information System called Crowtrax, allowing people to report where they were attacked by crows and thus contribute to a map of the most “crow-terrrorized” parts of the city.
I’m happy to report that there’s been a positive change in the way this part of the crow nesting season in covered by the local media over the past few years. It used to be all Hitchockian horror, with eyeball grabbing headlines about “savage” crows swooping from the sky and randomly mauling innocent pedestrians. In recent times there has been more curiosity about what’s really happening here, and much more thoughtful pieces have been written.
Last year, Georgia Strait reporter, Martin Dunphy, wrote such an article and one of my images was on the front cover.
The article included comments from Vancouver crow scientist, Rob Butler, and myself and was a refreshingly pro-crow look what can be a slightly hysterical time of year.
I have some tips on avoiding getting dive-bombed this year, but first of all it’s helpful understand what’s going on from the crows’ perspective.
The crow parents have been working on this nest since late February, carefully building it, sitting on eggs in secret, carrying bags of baby poop hither and yon, fighting off hawks, raccoons, cats and eagles. They are tired, stressed to the max, and very, very committed to the success of their little families. Now the precious babies are about the leave the relative security of the nest.
These “babies” are almost the same size as the parents at this point, so some people don’t even notice that they’re not adult crows. Sometimes they’re difficult to spot at all as they rest on the ground, camouflaged with dust and leaf litter. They’re often earthbound because, in what seems to be a bit of a design flaw, they come out of the nest before they can fly.
The young crows are curious and eager to explore, but have no idea what might be fun as opposed to fatal. The only things standing between the helpless fledglings and getting stepped on, run over or attacked by animals or birds of prey are good old mom and dad. These exhausted and very tense parents and are the “savage” dive bombers — and it’s really nothing personal, they just want you to STAY AWAY from their precious offspring until they can fly.
In my experience, sometimes the raucous cawing isn’t even directed at us humans. Often they seem to be screaming instructions at their fledging and/or making a lot of racket just to drown out the baby crow noises that might attract real predators.
So try to remember, you’re not in a Hitchcock movie — just a small domestic drama.
TIPS FOR KEEPING YOURSELF AND THE CROWS SAFE
Avoiding the nest area if possible.
If you can’t stay clear, wear a hat or use an umbrella when you walk by.
Try pinning fake eyes (paper drawings, or make some with felt) on the back of your hat or hood. Crows only attack from the rear and if they see a pair of eyes “looking” at them they won’t swoop — according to Seattle crow scientist John Marzluff.
Earn some trust with a small offering of unsalted peanuts. Not a big pile — just 3 or 4 peanuts as a gesture of friendliness.
This might just be me, but I always speak softly to the parents and tell them what a great job they’re doing.
If you see a crow fledgling alone on the ground, don’t assume it needs rescuing. There will be a parent crow nearby watching over things and, unless the baby is obviously injured, it’s always best to leave it alone.
This following little diagram is something I put together years ago as an easy guide to telling fledgling crows apart from adults …
Once the baby crows are able to fly the parents will become a lot more relaxed and spend a lot of time feeding, grooming and showing the young ones the ropes of being a successful city crow.
Spending time watching this process will reward you with many laughs as you see yourself reflected in the behaviour of the parents, kids, or both.
I shouldn’t really be writing a blog post, having promised myself that I will dedicate this month to (a) getting the City Crow Calendar 2022 ready to go the printer and (b) finishing my upcoming Crow Therapy online presentation.
But it’s crow fledgling season out there and therefore hard to stay on task. As justification for the distraction, one small drama currently playing out meshes rather well with aspects of my Crow Therapy talk.
It concerns periscopes and perspectives
As we go about our day, periscope firmly pointed in the direction of human life goals — not being late for a meeting, what to make for dinner, what’s going to happen next in our favourite TV show — it can come as a bit of a shock to be attacked out of nowhere by a crow.
As always at this time of year there are lots of news stories and tweets about “harrowing” experiences with “crazed” crows. I guess it can seem like that if it comes out of the blue.
But crow nesting season is a perfect time to swivel the periscope in your personal submarine and take in a different view.
There have been some screams from the end of our street lately. The elementary school there is currently being used as a training centre for School Board staff so there’s a lot of coming and going. At least one unsuspecting person has been pursued by furious crows.
Mabel and her mate to be specific.
Frazzled parent, Mabel
From the point of view of the dive-bombee, the crows have inexplicably gone bonkers and need to be restrained in some way.
But (swivel periscope … c-r-e-a-k) let’s look at the situation from Mabel’s point of view.
Mabel and mate have been tending a nest just across the street from the school since April. Early this week their fledgling (probably against parental advice) exited the safety of the nest and took refuge in a small bush right on the corner of school. Junior can’t yet fly enough to get into a tree, or onto of the school roof, leaving them heartbreakingly vulnerable in a terribly high traffic area.
At one point, I’m told by a neighbour, a landscaping crew heedlessly started weed whacking in the area!!!
From the point of view of Mabel and her mate, people are definitely bonkers and need to be restrained in whatever way possible.
The innocent people walking into work don’t have any idea where all this avian wrath is coming from. Minds inevitably turn to Hitchcockian scenes of malevolent bird invasions.
Mabel and her mate just know that people are deeply unpredictable and often dangerous.
They might step on their baby without even noticing, or back their car over it, they might let their dog or cat attack it, they might inexplicably assault the bushes in which the baby is hiding with a foliage chopping hell machine. You can’t make this stuff up!
So, if warning caws are ignored, humans must be kept away from the fledgling using the only way open to crow parents — the time honoured dive bomb technique.
I’ve attempted to bridge the understanding gap by explaining to a human person from the school what is going on, so hopefully periscopes will be redirected on the human side.
At least until Junior here figures out the flying thing.
I’ve also had a word with Mabel, but I’m not sure she’s about to change her mind.
Mostly for the birds, of course — but peripherally for those of us who anxiously watch the goings on.
Yesterday, for example, was very tense.
I don’t know where Marvin and Mavis are nesting this year. I used to be able to see them from my house, when they nested in the Notre Dame poplars and, for good or bad, could distantly watch every development.
In the absence of those trees, I mostly see them on construction fences of various kinds, or perched on the new duplex being built on the corner. Their nesting location this year remains a mystery.
I’m pretty sure they have built one nearby somewhere, as Mavis has been mostly absent for a few weeks, presumably sitting on eggs. One local nest possibility is a big tree in a neighbour’s garden. It looks like a pretty promising location — on paper — but they suffered a raccoon-related nesting disaster there about four years ago.
Crow collecting “soft furnishings” for final touches to a nest.
Yesterday it became clear that (a) someone WAS nesting in there and (b) raccoons have a good memory. We had a crow riot as about a dozen birds whirled round the tree, calling angrily from nearby wires and diving into the branches from time to time.
At first I couldn’t see the raccoon, but eventually spotted her on a neighbour’s deck, moving somewhat clumsily up to the drain pipe …
… and from there to the roof to examine the feasibility of leaping directly back into the tree.
In the end, she decided the jump was too much, but must have found another way up as the frenzied cawing went on from the afternoon and into the evening.
I imagine the raccoon probably got what she was after in the end. They usually do, in spite of all the crow racket and, after all, she doubtless had hungry kits waiting at home.
Many crows came to harangue the raccoon and, while I’m sure Marvin and Mavis were among them. I don’t know if this was actually their nest or not. Only time will tell, I say to myself, in an effort to see the big “Nature Unfolding” picture without giving myself a heart attack in the process.
The local bald eagles are another constant threat to the crows’ nests. They have their own nest nearby and cruise the neighbourhood several times a day, inevitably pursued by large groups of irate crows.
In the photos above you can see how close the crows are willing to get to those big claws. In the second photo the crow looks as if he’s trying to grab the eagle by the tail and pull the bigger bird back. You can also see that, in the eagle claws, is a bird — most likely a crow fledgling.
So, you see what I mean about this being a tense few weeks!
In other, less traumatic, nesting news — I’m starting to see the breeding female crows again. In April it’s as if they’ve all joined a witness protection program, suddenly disappearing from sight in order to sit (ever so, ever so, quietly) on the nest. If you hear a subtle croak from the nest in April, it’s most likely not a hungry fledgling, but a female quietly reminding her mate that he needs to bring her a snack. The males are also quiet and uncharacteristically low key. Definitely not the time of year to be drawing any unnecessary attention to yourself and give hints to nest location.
White Wing and her mate live on a shady street with a lot of big trees and she’s usually among the first of the local female crows to disappear into the nest. She reappeared this week, indicating that the eggs have probably hatched, and now she’s joining her mate in foraging for food for those endlessly hungry little beaks.
It also seems that, perhaps to entertain herself during those tedious weeks on the eggs, White Wing was taking language lessons as this (earlier this week) was the first time I’ve ever heard her make sounds like this.
Just around the corner, Mr. Walker has been seen solo for a number of weeks now, keeping lookout on his favourite tree.
In recent days he’s been absent too, so I imagine he and his mate are being kept extremely busy somewhere up in the leafy branches.
In the next few weeks, I hope to see some of these little faces popping up around the neighbourhood.
The parents will be fiercely protective, especially during that high risk period when the baby is out of the nest but can’t fly. There may well be some dive bombing of unwary humans. But we should try to remember how hard these crow parents have worked to get that little fledgling to this stage, how many perils there were along the way, how many more dangers still stand between this little crow and adulthood. The crow parents may seem a little crazy at this time of year, but if you know the backstory you can understand why.
A few tips to avoid being dive bombed:
Avoid the area for a week or two if possible;
Put fake eyes on the back of a hat (they won’t dive bomb if they think you’re looking right at them;
Mabel and her mate began their 2020 nesting odyssey way back in April when I photographed the series above, written about in A Message in the Sky.
A nest was duly built in a nearby ornamental plum tree, and Mabel sat on it for a while, settled in a pretty pink world.
It seemed like a good early start, so I was all ears for baby crow sounds by mid-June. Sadly, something must have gone wrong with that nest location, as it was was abandoned sometime in June, and it looked as if Mabel and her partners might be deciding to take a year off from the parenting business. They did have an extremely busy time last summer with three demanding fledglings, two of which were still with them this spring.
She surprised me again last week when I heard not one, but two, and possibly three fledglings calling from her neck of the proverbial urban woods.
And there was one …
… and another …
I’m pretty sure I heard a third, but I haven’t seen all three together yet, so hard to say for certain. Either way, it looks like another long, hot, busy summer ahead for Mabel.
Hopefully the “teenagers” still with her be useful baby sitters from time to time. Mostly though, it’s Mabel I’ve seen doing the feeding and general herding of gormless babies out of danger.
One of her fledglings beginning that vital crash course on what is, and what is not, food. Small pebbles now ruled out.
Baby experiences his/her first heatwave
I saw Mabel and one of the babies near our house this morning. That’s not “their” end of the block but the parents do have to follow wherever their boundary-innocent offspring flap off to.
First, baby posed for a distant pop-up portrait …
Then, seeing how fearless mom is, in for a close-up …
Mabel must be getting on bit by now. It looks as if her right eye is getting worse, and yet she continues to add to her corvid dynasty year by year.
More crows in line for her throne and her rusty chain of office — although she looks ready to rule for many years yet.
Sat, June 6: An email arrives from the school — “tree work” will start next week.
Surely not? It’s nesting season!!! Sun, June 7: We write to the school to ask how they plan to do this “tree work” without disturbing nesting birds. Mon, June8: A reply from the school:
With regards to the status of the existing trees, which are addressed within our Building Permits and requirements, our landscape architects have a registered biologist currently conducting a review of the existing trees to be removed to confirm if there are any birds currently nesting in the trees. This is a provincial requirement based on the Wildlife Act and is standard throughout BC for construction happening on treed sites between the months of March and August. There are a range of requirements that need to be met to consider a nest “active” and the biologist assesses the trees for these requirements. If nesting is present the biologist will provide guidelines for how to treat the nest and what timelines are required to ensure the Act is met. There are strict protocols that we have to follow and these are being adhered to.
June 9-10: A frantic series of calls are made to City Hall to see how this could happen. Attempts are made to find out who to contact at Environment Canada as this seems contrary to federal rules.
I write my blog post about how a nest count seems unfeasible and send it, and an accompanying letter, to Vancouver Mayor and Council.
June 10: We hear that the school-hired biologist’s report has been submitted, stating that, in all of those 23 trees there is just a single White Crowned sparrow nest, so while some trees will be spared (the nest tree and some buffer trees) until June 23, pending another nest inspection, the rest can be cut immediately.
We don’t even know what the biologist’s report contained for sure, as it’s not publicly available. Incredibly, we were informed that a Freedom of Information request has to be submitted and processed, something that takes weeks or months, before we can see it.
June 11: (only 3 working days after the email warning of “tree work” arrived) most of the trees are gone. Not enough time or information to mount a fight to save them just until nesting season was over — and I can’t help but think this was part of the strategy.
The biologist who wrote the report was not present on the work site.
There were a host of community safely issues with the work site that had to be reported to City Hall, which I won’t go into here as that’s a whole other story — but speed over safety seemed to be the order of the day.
June 12: I receive an email from Mr. Sadhu Johnson, Vancouver’s City Manager, detailing how all the legal i’s and t’s were dotted and crossed, to make this cutting permit legally watertight from the City’s point of view.
Fallen poplars. Look how sound the wood looks.
This huge end tree was not noted as a nest site by the school’s biologist — but I heard white crowned sparrows in there every morning this spring.
This Spring, with many of us forced to stay close to home and contemplate an uncertain future, one of the great consolations has been watching our local birds. We’ve taken comfort in observing them going about their natural seasonal business, even as the human world turned on its axis.
Baby bushtit feeding time
The incredibly constructed bushtit nest — moss, leaves, lichen and spider webs for stretchiness.
The nesting season timing has meant that — some of us for the first time in our lives — have closely observed the hope and the drama inherent in the process; the careful strategy of site selection, the tireless work of collecting twigs, followed by soft materials for a cosy lining. In a somewhat quieter world, we’ve been better able to hear the fierce and beautiful territorial songs. “Stay away from this tree! This tree is my tree! I am a fearsome warrior house finch! Trespassers beware!”
Nesting and fledgling young is a brave and precarious avian mission every year. There’s so much that can go wrong: stolen eggs; fallen hatchlings; predators; window strikes by novice flyers. We cheer to ourselves when we see the clumsy fledglings finally out of the nest and begging for food, experiencing that small vicarious thrill of victory over circumstance that makes the day a little brighter.
And, what can we do for them, in return for the joy they bring to us?
Well, surely here in Canada our birds are at least protected during nesting season by our Migratory Birds Act?
And certainly, Vancouver (Greenest City 2020 with its very own Bird Strategy must be especially diligent in this area?
Naively, I’d have thought so until one week ago today — when a work crew arrived and felled most of the Notre Dame poplars at the height of nesting season. We knew the trees were destined to go at some time, since the City gave permission for Notre Dame School’s artificial turf facility and tree removal last year, but it honestly never occurred to me that they would come for the trees at peak nesting time.
Apparently we love our birds in Vancouver, as long as they don’t get in the way. Even during nesting season.
Confused White Crowned Sparrow at Notre Dame, June 12
But cut them they did, the very day after I posted my last blog post arguing against it. Today most of the Notre Dame poplars are now stumps.
While I’m still in shock, I’m thinking of ways to move forward with what I’ve learned over this last week and a bit.
My goals now are:
to share what I learned through this process in case it can help others in the future
to have the remaining ten poplar trees left alone until nesting season is over.
According to the Migratory Bird Act of 1994, it seems as if most birds in Canada are protected from disturbance during nesting season.
That’s what the Act says. That’s what I thought was the law, and judging by the many people who commented on my blog and my social media last week, that’s what most Canadians think. But, apparently, we’re all wrong!
Last week offered a master class on how developers and construction crew routinely get around the Act … with a little help from City Hall. If you’d like to see a timeline and some pictures of how things unfolded here last week, see Chainsaw Timeline.
So that was last week. This week, I’m trying to look forward.
1. Going Forward — Big Picture
What did I learn since last week? Well, obviously the first thing was — I shouldn’t be so naive and optimistic about the legal protections offered to Canadian wildlife.
Second, at least now I know that the best government department to contact in this situation is the enforcement branch of Environment Canada, as they are ultimately responsible for enforcing the migratory bird convention act. However, you do have to go through the national number — 1-800-668-6767 — to reach someone.
Robin on some tree debris, June 14.
I finally did get in touch with an actual Wildlife Canada enforcement officer to report the situation, although not until most of the trees were down. He said his department would look into the matter and I’m waiting to hear back from him.
I also made contact with the President of the Wild Bird Trust of British Columbia, which oversees the Maplewood Flats Bird Sanctuary in North Vancouver. He wrote the following powerful letter on our behalf, sent it to various people and Vancouver City Hall, and kindly gave me permission to reprint it here.
The Wild Bird Trust of BC is seriously concerned with the removal of mature trees in the height of nesting season which surround the Notre Dame high school in East Vancouver.
Given the serious optics of skimming past or minimizing contravention of the Migratory Bird Convention Act (1994) we would like to understand how only a nominal pair of nests was identified in this significant urban green space. Given the Greenest City objectives and the COV’s commitment to transparency (as well as in support of food faith and building and repairing trusting relationships in communities) information concerning the trees removal should be made immediately available to the Notre Dame Neighbours Committee. Such information would be a scientific report provided by Notre Dame’s contracted biologist which was used by the City to green light mature poplar trees being removed at the height of nesting season. The Wild Bird Trust of BC is also interested to review the report submitted to the City.
We are concerned that local residents organizing to protect nesting birds would be required by the City to pursue an FOI to access a biologists report which was sent to the City to justify the actions. Treating this information as confidential is totally against the spirit of transparency, and the Greenest City objectives of promoting citizen engagement with its principles.
It is our request that no further trees be removed until the report is made public, outside of any FOI process, and that the City not approve the removal of mature trees in nesting season without (at the very least) providing transparency in decision making.
President, Wild Bird Trust of BC
I’ve spent a lot of time this week looking into the whole issue of how trees and birds are protected (or not) during nesting season. I’ve spoken to a lot of experts in the subject and learned quite a bit. For example, my intuitive mistrust of the whole “nest count” concept, as outlined in the last blog post, is backed up in the Government of Canada’s own Guidelines to Reducing Risks to Migratory Birds. Nest counts, which the school letter seemed to indicate were being employed, are not considered best practice in all cases, although, we can’t actually know exactly what methodology was used, as the report is being kept hidden from public view, pending our Freedom of Information request.
A term I’d never heard before is “incidental take.” This, it turns out, is what has happened here and it’s a hot topic amongst biologists, environmentalists, government of various levels and industry and real estate stake holders.
A hundred years ago, on August 16, 1916, the Migratory Birds Convention was signed by Canada and the USA. The Convention was implemented in Canada by the Migratory Birds Convention Act (the MBCA). In 1980, a clause was added to the regulations under the MBCA which prohibits the destruction, disturbance, or take of nests and eggs. This prohibition – often referred to as “incidental take’ – applies even if the activity which causes the harm is not directed at the nest or egg and is otherwise legal. In the period after 1980 the prohibition was largely overlooked in economic practices and by regulators, and incidental take was widespread. However, in recent years there has been an increase in awareness (and enforcement) of the prohibitions, and consequent requirements to address it in Environmental Protection Plans and Environmental Assessment Certificate requirements.
It seems that there are a lot of inconsistencies and grey areas between what is laid out in the federal protections for birds and what happens closer to reality. When the Vancouver City Arborist receives a biologist’s all clear, it seems that’s all that’s needed to get a permit and start those chainsaws. It seems to me, and others, that there are many problems with this system: convenient for builders; fatal for birds.
So, if birds have been a source of joy and comfort for you in these trying times, you might want return the favour by dropping your local, provincial or federal representatives a quick line on this topic.
Journalists who have written stories about our increased love for birds during the pandemic might want to follow up on this thread.
2. Save the Remaining Poplars
Just one of the surviving poplars. Imagine trying to visually determine how many nests are in one of these, let alone a row of 23.
Ten trees were left as a buffer around the white crowned sparrow nest the biologist reported seeing. I am convinced there were nests scattered throughout the whole stand of trees and that they all should have been left.
It was tragic to see birds of various species examining the logged tree area in the days after the cutting.
Juvenile House finches on the construction fence the day after the trees were removed.
Even these ten poplars are not safe until the end of nesting season — only reprieved until June 23 when the biologist will return for another nest assessment. If they’re declared “nest free” the City will issue yet another cut permit and they’ll be down later that day or the next.
Even if the young sparrows in the current nests have fledged, many species of local birds make a second nest in a single season. I’m already seeing white crowned sparrows only feet from the poplars collecting material for that second nest.
White Crowned Sparrow with Nest Lining
I am therefore asking Notre Dame School and the City of Vancouver to release the initial biologist’s report to the public and leave these ten remaining trees to fulfil their role as a nest site for one last season. Given that it’s really impossible to see who’s living up there, the birds deserve the benefit of the doubt this time.
How You Can Help
If you’d like to get in touch with your City Representatives — either on the BIG PICTURE matter of issuing cutting permits in nesting season and how nests are counted, or the SMALL PICTURE issue of saving the ten surviving poplars for a few more weeks, here is their contact information.
I promised myself I was done being angry about the removal of the Notre Dame poplars. It’s been a year since the City granted permission for Notre Dame School to go ahead with their artificial turf stadium and remove the trees, so I’ve had twelve months to prepare. I did feel prepared.
But now they’re taking the trees down during nesting season!!!
I would have thought this would be a clear and hard “no” from the City permit people, since the Migratory Bird Convention Act (1994) makes it illegal to disturb the nests of breeding native birds. To my horror, it seems it’s pretty easy to get around this.
It was only this Saturday we received an email from the school to let us know that they plan to start work in the next couple of weeks, beginning with “tree work.” They had already hired a “registered biologist” to assess the presence of nesting birds.
Apparently the biologist submitted his report to the City Arborist yesterday and the cutting permit (valid for only 48 hours) has been given. We can expect the cutting to begin any moment.
The biologist did find a couple of small nests in the lower branches of two trees, so they will be omitted from the falling for a few weeks pending further inspection. If we wish to see the actual report, we need to submit a Freedom of Information Request.
The thing is, I’m certain there are FAR MORE than a couple of low nests in all 20+ of those tall poplars.
Right now, finding a small nest in those trees would be like a game of 3-D moving Where’s Waldo, in which Waldo is not wearing a striped sweater and red hat, and is actively trying to remain hidden.
The trees are up to 70 feet tall and currently covered in a dense and dancing canopy of leaves. Here, in some rather bad video camera work, I pan down just one of the trees, using a zoom lens. The aim is to give you an idea of how hard it would be to spot an individual small nest.
Why do I think there are nests in those trees?
While I’m not a registered biologist, I have lived next to these trees for 29 years, and spend countless hours closely watching the trees and the local birds.
In years gone by it’s been easy to spot crows’ nests — partly because of their larger size, but mainly because they get a very early start, before the leaves are out.
Marvin and Mavis, spring 2019
Ironically, there are no crows’ nests in the poplars this spring. Perhaps it’s because they were smart enough to read the City permit signs last year! More likely, it’s because there were too many hungry bald eagles using the poplars as a baby crow buffet.
I am, however, sure that the poplars ARE currently hosting many other smaller birds’ nests right now.
For example, one small ornamental plum tree in front of our house is currently hosting a bushtit and a Northern Flicker nest. If there are at least two nests in that one tiny tree, how many could we estimate to be in the spacious poplars?
The poplars could accommodate nests of many species, from cavity nesters like the flickers, downy woodpeckers and black capped chickadees to other birds like bushtits, sparrows and robins.
This white crowned sparrow flew out of the poplars this morning and landed on the school fence. His, coincidentally, is one of the nests the biologist found in the lower branches. Northern Flickers and other species’ nests would be much higher up and really hard, if not impossible to spot.
I’d have thought that much better way to assess how many nests are likely in the poplars would be to look at the local and current range of bird species,* and look at the nesting potential in the poplars and make a fair occupancy estimate from that.
Unfortunately, that’s not the way things are to go, so I am waiting here, tensed for the sound of chainsaws.
Like this baby house finch in my garden, I’m a bit beyond words at this point.
Raccoon snoozing in the poplars in happier days.
*Bird species currently in our immediate neighbourhood: Robins, Anna’s Hummingbird, White Crowned Sparrows, Song sparrows, Golden Crowned Sparrows, Black Capped Chickadees, Juncoes, Bushtits, Northern Flickers, Downy Woodpeckers, Wilsons’s Warblers, Violet Green Swallows, Crows, House Finches, Goldfinches, Pine Siskins … these are the ones I can think of just off the top of my head.
Thankfully, he is no longer the bedraggled bird he was at peak moulting season last year. He got back to being a handsome, if unremarkable looking, crow by late fall.
Last spring I was away in the UK for the month of June, so I missed a lot of nesting season. For whatever reason, Mr. and Mrs. Pants produced no offspring in 2019, so I’ve been keeping a special eye on their progress this spring.
They had a rather trying fall and winter last year, with territorial trouble on their southern border from the Walker family. While Mr. and Mrs. P had no surviving babies last year, the Walkers did, and their need for more food and their numerical advantage led to bold and frequent incursions into Pantsland.
Both of the Pants couple spent most of their time with eyes scouring the sky for invading forces and they were very jumpy and seemed … if it is possible to discern this in crows … stressed out.
Mrs. Pants on guard
Mr. Pants keeping a wary eye on things from above
Mr Pants employing full tail regalia to defend his territory.
Now that nesting season is well underway, all the crows are keeping a lower profile and things have at last quietened on the contested border.
Mr. Pants takes a relaxed moment to pose with wisteria.
As I mentioned in the last post, Small News, many crows are choosing small street trees as nesting sites of late. While they’re closer to the ground and the risk of predation by racoons, cats, squirrels etc. they’re less likely to be raided by large birds like ravens, hawks and eagles — which seems to be an increasing risk as these birds gain a firmer foothold in the city.
The Pants have long favoured the small tree option and this year is no exception.
I spotted Mrs Pants last week sitting in their nest in quite small street tree — a crabapple of some sort, I think, and the same type of tree they chose two years ago. Fortunately they seem to have selected a healthier specimen this time, as the spring 2018 tree shed a lot of leaves in spring, leaving poor Mrs. P baking in the sun or thoroughly soaked, depending on the day, and not particularly well hidden. Even then, they did successfully fledge two little ones that year, although, sadly neither made it past the first few months. One just disappeared early on and the other succumbed to avian pox.
Being an urban nature enthusiast involves, as I learn anew every year, witnessing a lot of tragedy and well as joy.
Mrs. Pants on the nest this morning
Still, like the crows, we consider each day a new start, and each nesting season a potential bonanza of good news, so fingers crossed for the Pantses and all the other birds putting their all into the nesting business this spring.
I walk around the neighbourhood several times a day during nesting season, checking in on the crow news — taking photos and making mental notes of how things are with the various crow families I’ve become acquainted with over the years.
At this point I’ve got so many crow-notes stuffed into my head, I’m not sure where to start unpacking them.
Rather than trying to cram all the news into one post, I think I’ll go one crow family at a time, starting with the Pants family in the next post.
First though, I have to tell you about this morning’s drama.
We’ve had nesting bald eagles in the neighbourhood for years, so all through each nesting season the eagle parents scour the area for baby eagle food, always followed by a loud and angry crow posse. This morning I happened to catch some of the action from relatively close quarters when the eagle landed in the school grounds at the end of the block.
The crows, backed up by screeching gulls, seemed even more loud and frantic than usual.
So impassioned, in fact, you can see one crow in the video below whacking the sitting eagle hard enough to cause it to fly off.
The reason they were so mad? It looked as if the eagle had scooped an entire crow’s nest right out of a tree. You can see a glimpse of the nest in the video below.
In the end, the eagle dropped most of the nest, although there was something still gripped in its claws as it flew off.
The eagle population is part of the reason the crows are changing their nesting habits.
Local ornithology expert, Rob Butler, who spoke about crows last weekend on local CBC Radio show, North by Northwest, mentioned this change: crows who had previously chosen high nest sites for protection against ground based predators (raccoons, cats, coyotes) are now picking spots in lower, less eagle-accessible trees — even selecting quite small street trees they calculate will be awkward for raccoons to scale.
I’ve certainly noticed that our local crows have rejected the once-coveted penthouse suites in the Notre Dame poplars this year in favour of much lower and more camouflaged trees. Marvin and Mavis have picked such a low, mid-street location for the nest this year, it would be quite the drama if the eagle swooped that low.
If you think being dive-bombed by a crow is exciting …!
The Pants crow family, who I’ll be looking at next time, have long been fans of the low-rise nest building solution and we’ll have a look at what they’re up to this spring.