sparrowhawk?

Hi, i came back home today  and there was alot of pidgeon feathers right in front of my window, theres a bit of blood on them and what looks like a skull, but theres nothing else, i  think it would of been a female sparrowhawk as they catch bigger prey, but would it of plucked it and just took off with it?? i've search my garden for more remains but theres nothing....im very dissapointed that i missed it, would have been amazing to watch!!!