I had one of these show up at my camp when we first bought it. He would hit the non functioning satellite dish for an hour every morning at daylight. Sounded like guns going off. Then one bright sunny day he flew into the picture window with aloud smack. I went outside thinking somebody had thrown a rock. Nope. He was belly up on the deck. His eyes were flickering a little so I left him. Went back in an hour and he was still bad off so I flipped him upright. He sat there for another couple hours but, eventually flew off. Back at it the next morning so I took down the dish. He was hitting a white birch tree and a few older apple trees too. I haven't seen him around much any more.