The girls are quite a bit bigger and still growing! Silvia has even started clucking! I think of this as the hen's version of early puberty voice change. It also shows that she is female! Still waiting on the others to start clucking too- right now they are all still chirping like chicks. We bought them a few chicken toys to play with and moved their box to the dining room until they are ready to move outside to the coop.