We have one pullet who has been in a nest box (actually 2 different ones) ALL day is seems. She was in there for at least 5 hours, she came out for a bit to scratch and then went back in. My son finally found an egg, but it was NOT her's, it belonged to one of our black birds (the one who lays blue/green eggs). So what could be going on with her? She and the rest of our pullets are 24 weeks old. She had a fit when the roo came in to the coop. She seems to be okay with the other pullets coming in, but NOT the roo.