We raise standard cochins in the blue, splash and partridge colors. This is the best bird inthe world as far as calm, quiet and good pet, etc... Mine started laying around 7 months and htey have not missed a day since. They lay big, round brown eggs. I have heard lots of people on here talk about them not being good layers, but I have had a much different experience with mine. You can tell the boys from the girls at about 2 days old.
Are the boys bigger at that age? We thought we had and Olivia/Olive partridge cochin. "She" was energetic, always wanting to be with us and explore. Her sister was smaller(barred cochin) and much more quiet and laid back. As they grew, Olive feathered much slower, the comb grew and we knew we had an Oliver. He and Gracie are 4 month old. He is really handsome and hasn't made a peep. Gracie's comb is slowly growing and her wattles are coming in. Our EE is a week younger and she should be ready to lay in a couple weeks.