I've got 4 barred rock chickens 13 weeks old. Three are cockerels but one has the larger comb, wattles and tries to crow (badly, and not till after 7:30 am). The other 2 look identical to each other. When free ranging the larger one almost always goes to roost in the coop 30 minutes to an hour before the others. He even beats the 2 guineas. Is this odd? Normal? Is he a weird chicken? He's the one who'll nip at your fingers too. The others are much more passive.