Bill is one of my more recent crow acquaintances. As you can see from his photograph, he’s pretty easy to pick out from other crows because of his spectacular beak.
The overgrowth of the top beak is caused by a virus — AKD or Avian Keratin Disorder. An over-production of keratin causes the beak to keep growing beyond normal dimensions. The disease is mostly likely caused by a virus (Poecivirus) and was first noticed among chickadees in the 1990’s. The beak overgrowth can be fatal in advanced cases, if the bird can no longer preen and/or feed efficiently.
Bill is one of the luckier AKD-afflicted birds. When I first “met” him earlier this spring, it was apparent that he was doing well, despite the overgrown beak. He has a mate and a couple of younger crows (probably fledglings from previous springs) as part of his entourage.
All the same, I worried about Bill.
I remembered that I had taken a photo of a crow last summer with a somewhat hooked bill. I’d seen that crow close to the area where Bill lives, so the chances were good that the crow in the summer photo and Bill are one and the same bird. I searched through my files and was disturbed to see that the beak did look noticeably smaller back then.
Several of the crows I have become attached to over the years have had, or continue to have, physical challenges. These differences help tell them apart from other crows — like Earl with his bent leg and Echo with her one blind eye — but they’re also a cause for ongoing worry about their well-being.
Bill, however, seems to have solved his own problem.
As soon as we got back from our week away in March, I did my usual tour of all the local crows to check in on everyone.
When I got to Bill’s area, I was confused; there was a crow who looked and acted exactly like Bill, but with a much less hooked beak.
It HAD to be Bill.
So I tried to get as close a shot as I could of the tip of his beak, and, sure enough, you can see that it’s slightly rough where the end has somehow snapped off.
Below: Bill, with his newly streamlined beak, and his mate, Irene.
Side Note: I usually give my crow couples alliterative names (Marvin & Mavis, Earl & Echo, Fred & Florence, Dennis & Dolly … you get the picture …), but Bill and Irene go together in my mind. This is because my parents’ best friends when I was young were Bill and Irene, and they were Aunty Irene and Uncle Bill to me.
I’m not sure how Bill managed to get a “beak job” done. I’d never noticed him working at the beak to wear it down, so it’s unclear if the modification was a skilful operation or just a happy accident. However it happened, it’s great timing as he and Irene are fully committed to the nesting process now.
Irene was the first of the local female crows I’ve heard impersonating fledglings and begging for food from their mate. Once the eggs are laid in the nest, the female crows will be on egg-incubation duty for about 18 days and, during that period, will be fully reliant on their mates to bring them food. To make sure the males are ready for this task, the females stimulate their feeding instinct by making the begging sounds and movements of a young fledgling.
Below: Irene making a begging call, which is promptly answered by Bill.
So, mandible-wise, he’s now billcognito.
His beak is still pretty impressive, but for now, it’s within the range of normal.
Luckily, I now know him and his family well enough to be able to find him just by his location and behaviour, and by zooming in on that DIY beak job.
Small good news in a crazy world.
© junehunterimages, 2026. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to junehunterimages with appropriate and specific direction to the original content.





















