I have never (NEVER!) had a broody Ameraucana. Some hens have "pretended" to go broody for a day, and just didn't want to commit to the full time job! I have a huge Brinsea that I love, and keep Silkies and one Black Tailed White Japanese bantam that steal clutches to raise. The BTWJ hen went broody on air for 2 days and about attacked me when I brought in 2 week old chicks in a cage to put into a pen in the coop. I tested it out and let her in with them. The chicks were all sorts of confused at first. I let them all outside the next day and momma did what she was supposed to do...raised her adopted brood! Three months later, they are all still following her around. Some are BCM's from Wynette here on BYC, that are now twice her size. It's too cute.