A female cardinal missing her right tarsus has been part of the mixed flock visiting our feeder this winter:
She looks a bit frowsy; it’s hard for a bird to groom herself with just one leg.
I managed to get eight seconds of video that look significantly better after applying Youtube’s video stabilization:
It’s a quality of life issue, but making do with one foot is probably better than starring in a window strike:
All the pix were hand-held through two panes of 1955-era window glass with the lens set for maximum telephoto.
The Smell of Molten Projects in the Morning 
Windows are the product of a conspiracy led by ants…
It occurs to me that statement would remain true with are replaced by is… [grin]