This morning we found blood splotches on the floor of the coop and a few drips down the side of the walls. It is a small, plastic coop, with light-colored walls, so the blood was pretty prominent. We inspected our three girls this morning and found no injuries, no blood on their feathers (my bright-white chicken was spotless). Their poop and behaviors are completely normal. I'm wondering if they may have chased a mouse or bird into the coop, trapped and eaten it? I didn't find any bones/feathers/fur etc. My question is, would I see any remains or do chickens eat the entire animal??? I have seen my one girl eat an entire baby bird in one gulp (I'm still trying to unsee it), but it was pretty small. I can't find any other explanation for the blood. Maybe someone else has experienced this? We've had our hens for 3 years and never found anything like this before.