Ive got big windows all round the house & deck. Its always a problem for me after I clean them
which is due for doing in the next couple of days. The damned things have got no radar and just bash into the windows. Couple of mornings ago one of them hit the bedroom doors, we were sitting in bed having coffee. She laid on the deck outside the door for about 15 minutes. Flat. Looked like shed broken her neck .. then after about 15 mins her head lifted, she sat like that for another 15 & then her hubby came over and checked her out. He sat with her for about 5 mins, then gave her a shove that knocked her off her feet & flew away. She gathered herself - yelled at him sitting on the power lines and took off to give him a speech!
All the while the 2 dogs (who ordinarily would chase and catch them) sat beside us watching the whole thing unfold without making a move.
Good luck with the thrush SP. Its possible that it has internal injury from them sharp teef the cats have. Thats the only reason we wont have cats.