It's about 7:30 at night, and I go out to give my two girls some pellets and scratch(as treats). All of a sudden I hear a clatter of claws....I look up at the roof(I live in the city) and see a hawk staring down at me and my chickens! I throw the rest of the food in my hand in it's general direction, hoping to scare it off...no luck. It's about the size of my EE's, grey and white. I grab a rock and stare up at it, just waiting for it to make a move. It screeches softly down at me... I open my mouth and screech right back! That terrified my pullets, but the hawk/falcon/whatever didn't even seem to notice. It moved up the roof, but I didn't dare leave the yard. Not until it left. After awhile, I heard the rush of wings and looked up to see it flying away. It had strings attached to its legs, so it must have escaped from somewhere. Gosh, I hope it's caught soon, and that it doesn't come back tomorrow! I did look online, but I couldn't find anything about a lost raptor or bird of prey.