A raccoon can definitely kill and eat (part of) a chicken so I’d imagine a crow could be on the menu. Or a coyote. Or a possum or bear. There are vids of deer eating birds and other animals.
It wasn't a crow it was a blackbird [1], they're smaller and definitely lower down the food chain. If a fox came by while he was still on the ground it might have eaten him, they don't normally come out in the daytime though
