I'm not new to chickens , but have never taken an interest in their laying behaviors untill now . I have a breeding project going on and several breeds of pullets involved . I have a CX that will interupt her feeding [ not much inspires those girls to leave the feeder when the amount of feed is rationed LOL ] and start singing what I knew instantly had to be the egg song . She will sit in the nest box for a half hour , then leave without laying an egg . One or two days later she lays . Normal behavior for a pullet in the learning stages ? Also , in the other breeding pen , I've got an EE that for two days is often sitting in a box for 15 or 20 minutes , moves to another for quite awhile , then may wander around the yard checking the corners before returning to the boxes to " shop " again before joining the other pullets . No eggs . She was squatting for the cockerals last week but now avoids them . Normal first timer behavior or possible symptoms of a problem ?