Opposite alcoves held a trapped Song Sparrow (west) and a beautiful female Spotted Towhee (east) this morning. The Song Sparrow banged the window a few times and seemed to fly out unharmed once I got close to it. The towhee might have been a bit stunned, but she flew up strongly into a tree on my arrival, and all signs were that she’d move on unharmed.
Yesterday’s Lincoln’s Sparrow is still there.
Bird-Window Collisions at OK State 