I have just gotten myself 6 chickens, 3 are 3 mos old: 1 Buff Brahmas Bantam, 1 Silver and 1 Gold Laced Wyandotte, and 3 that are 3 1/2 weeks old they are: 1 Blue Ameraucan, 1 Appenzeller Spitzhauben, and 1 Crested cream Legbar. All are hens.. but I am still not sure about the Blue Ameraucan...