I currently have 3 chickens, all around 2 years old, one of which just hatched 3 chicks. Around the time the eggs hatched, one of the others, a RIR, suddenly started roosting on top of the nest boxes. Any idea why this could be? The new mom and babies are in a milk crate nest below the nest boxes. They are in with the other chickens, I don’t have them confined, so they are around each other all day. I’m stumped.