Aw Catherine, I'm sorry he died and you had to witness it. It is so hard to find a dead bird, I feel so responsible for all my birdie visitors. Don't be too hard on yourself!

Rest in peace little thrush.

Put some stickers on the window or feathers. It is sad to hear that thunk. I strung up loose feathers tied on to fishing line. They flutter in the wind and birds are supposedly adverse to loose feathers because loose feathers means predators. There are small suction cups on each end of the fishing line to stick on the window from the outside.

Thanks jean and comettose.........the feathers are a good idea. I have some of those little stained glass charm things on the window, but it must not have been enough. One year it was so bad, I just kept my drapes closed, which seemed to help.
Right now, outside my bathroom window, I have a huge spider in a beautiful web that I'm watching. Its so totally amazing how perfect they can make their webs.