A beak grows from the base, just like your own fingernails do.A little update on Eagley’s beak situation.
It’s now healed over and seems to be bothering him a bit less. He’s still struggling with some foods and is grooming himself less, but he seems more himself.
A tricky thing is it seems to be regrowing now, but only at the sides! You can see it in this photo - the white bits that protrude from his top beak down to overlap the bottom one are new.
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This is a lot of beak growth in a short time so I assume it’s in response to the horrid cutting, but I can’t see this coming together to make a comfortable shape for him. Hopefully I’m wrong - nature can be amazing at finding a way, after all.
It is usually pointed at the tip because the chicken rub it on the ground and other things ("honing" the beak).
The rooster probably has not been honing his beak while it is sore. As it gets longer and less sore, he will probably go back to doing it.
I expect he will have a perfectly normal beak again in a few months.
I would watch for a while and see. If it quits being sore, but he does not shape it properly himself, you might need to do it once or a few times with a file. But I'm pretty sure he will be able to go back to maintaining his own properly shaped beak as time goes on.I’m just really hoping he doesn’t end up needing regular stressful beak trims because of this whole stupid situation.