My hens are 11 weeks old and just today I've noticed 1 will leave the group laying in the bushes, go back to the coop, lay down and chirp. Then she leaves and another one comes and lays down in the same spot but doesn't "talk". Is this anything? Newbie here so I have no clue on what signs to watch for really or what the egg song sounds like. I have 5 hens total and 4 of them are getting some really good red color on their combs and wattles...is that anything either?