We have a quad of standard cochins. They will be 1 in June. One of the three hens is actually going to be two in June. I have yet to get a fertile egg from them. Someone told me to trim the feathers around their backsides. I looked, and it looks like it is okay. There should be no problems from what I see. Has anyone experienced this? If so, what did you do. Are they still too young, maybe?