no one here but us chickens

No one here but us chickens is an older phrase which is actually somewhat of a joke told to people for some good and easy humor. The joke has a crook coming to the chicken coop wanting to steal some chickens and when the farmer heard a noise inside the chicken coop he asked who was in there, to which the crook replied No one here but us chickens! While it comes from a common joke, the phrase is often used as a way to humor someone who is asking if anyone is there.