this is so beautiful

Aww...very sad. Hope he gets it back soon.

Boo!

Who TF do you think you're booing hooterboi

I've worked with one-winged bald eagles in the past and it is very sad. They peer up at the sky and are so hard-wired for flight that even after several years they will stiffen up and open their remaining wing as if preparing to spring into the air, then they remember and settle back down. ;v; Fortunately US law no longer allows whole wing amputations, only partial, and it's done very judiciously (e.g., only wild birds with a good likelihood of adjusting well and having a good permanent home).

Anyone ever tried making a prosthetic?

There's been attempts with beaks and feet but not with wings. Prosthetics are highly publicized when used with birds but the reality is that they never have been able to provide enough benefit to outweigh the costs (both monetary and life-quality) of constant maintenance and repeated replacement that is required.

Wings are such a huge part of a bird's identity, I imagine it would a devastating event for him. Though I do recall he does get it back, lucky for him.

Not yet!

He wants to be with his friends. So sad, he'll have to endure winter vacation alone