With apologies for the poor photo, this Carolina Chickadee appears to have been engaged in some post-breeding dispersal when she died. She was a female by brood patch, and an apparent ASY bird with fat = 1.
Bird-Window Collisions at OK State
"Birds of wide open prairies and damp, evergreen forests have taken their final breath on the sidewalk of a modern building on our urban campus." ~ T. O'Connell, 2019
Bird-Window Collisions at OK State 