In spite of local squabbles, crows will come together for a crisis. Instantly.
Border skirmishes, crow etiquette lapses, hereditary rivalries — all forgotten in a corvid heartbeat when the alarm call goes out.
Peregrine falcon in the ‘hood!
People sometimes consider crows’ mobbing behaviour towards larger birds as somehow mean. The collective noun, a “murder” of crows, is referenced, darkly.
To me, it’s one of their more admirable features — having the sense to know that they’re stronger together, and the ability to put aside individual differences in the face of a common danger.
Raccoons, coyotes, eagles, hawks, falcons, owls and even their own cousin, the raven, are considered enemies by crows. All of these creatures will snatch and eat juvenile crows and/or crow eggs, thus earning themselves a permanent spot on the crows’ “naughty” list.
It’s not that they’re really naughty, of course — just doing what nature dictates — going out grocery shopping for the family. The same applies to crows when they feed on smaller birds, and on through the spiralling circle of life.
While nesting season is over now, and most juvenile crows are now smart and fast enough to stay out of the way of the falcon (who is more likely on the lookout for a tasty pigeon) the crow response to a “sometimes-crow-predator” in the neighbourhood is automatic.
Every crow drops what they’re doing and flies off to join the collective effort to repel the enemy. Their job is to convince the “threat” that crows are just way too much bother and get them to move along and become someone else’s problem.
Individual crows will swoop very close to the offending predator. Sometimes too close for their health. Generally, however, the bird of prey will make a pragmatic cost/benefit calculation as to whether it’s worth the caloric output to chase a provocative crow. Most often they decide to wait out the mob for a while and eventually move on to a quieter spot.
All in all, I think “collective” is a much better, and more descriptive, word for a group of crows than a “murder.”
Apart from group defence, another advantage of crow mobbing behaviour is that, if you pay attention, you can catch glimpses of things that would otherwise go unnoticed.
For other posts about crow-revealed nature sighting:
Raccoons: Wall of Sound
Owls: Owl Dreams
Owls and Poets: Owls, Crows, Rooks and Poetry
Ravens: Raven Tutor
Missing Dogs: A Christmas Miracle — With Crows
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