in Chickens, ... Although chickens, being the omnivores that they are, will kill and eat mice if they find them, once the chickens are asleep, the mice are free to come and go at will.

Is it bad for chickens to eat mice?

Chickens are opportunistic omnivores – they'll eat pretty much anything that they can fit in their beaks. ... So a chicken eating a mouse is totally normal – it's well within their capability to catch, eat, and digest. And it's kind of nice to have some extra rodent control in the backyard, too.

Do chickens keep mice away?

Many people think you'll get infested with rats and mice if you raise backyard chickens. It's even one of the primary reasons, given by some communities, for not allowing people to raise chickens. But backyard chickens don't attract rats and mice! It's the feed and treats you give your chickens that attract rodents.