Here is a Secretary bird Sagittarius serpentarius skeleton I photographed some time ago: as usual, apologies for my terrible photography. The bird is lying on its back, and both its wings and legs are folded up. I would like you to concentrate in particular on its humeri: what the hell is going on?
Here’s a close-up. Both humeri were like this. It looks as if they were broken mid-shaft, and then healed, but with the two halves of the shaft being totally misaligned (though I’m not saying that this is necessarily what happened: I really don’t know). You might assume that a bird with injuries like this was incapable of flying. Unfortunately I know nothing of the individual’s history, nor whether it was a captive individual or a wild-caught one [I do have the specimen number and repository details on file if anyone wants them and is prepared to chase this up].
Incidentally, Secretary birds have lovely eyelashes. I have a good video on my mobile phone of a captive one bashing the hell out of a rubber snake.