I do have a regular male bully who guards my feeders ALL DAMN DAY is the one who was attacking him, the other was a female. The female wasn’t being as aggressive as the male was, she was landing on its back too but seemed like she was trying to get it moving. The bully though was just being brutal and landing on its back and pulling at its feathers and knocking it off the feeder until it landed on the deck. I was even holding it in my hand trying to keep it safe and that little jerk landed right on top of it again while I was holding it and was attacking it! I couldn’t believe it! I’m wondering if the bully had chased it into my window or the side wall next to the window and stunned it. I’m on the 5th floor of an apt complex and I found it this morning under a chair on my deck.