Sounds like a Cooper's Hawk. I was attacked, or at least my arrow was attacked once, by the largest giant 7 inch tall screech owl ever. It scared me so bad that I thought I could pass out, then my feet missed every peg while I was climbing out of the tree. The owl didn't do as much damage a bunch of crows did to my arrows once , when I left my back quiver hang while was off to the little boys room. "Ya gotta watch for dem critters, they'll get ya when ya least expect it." I thought the old trapper that said that to me when I was a kid was just messing with me, maybe not.