I have 7 silkies that are laying age. One started laying about 8 weeks ago, laid a few eggs and then quit. She was hunkered down in the spot she laid her eggs like she was setting on them, but there's nothing there. I've seen a few of the other silkie hens huddled with her. I haven't found any eggs in about 3 weeks and am not sure if any of the others have ever laid. I've looked around the run for a stash of eggs with no success. My silkies are age 29-36 weeks old right now. Is this normal? Will they start laying or are they possibly delayed due to the heat? It's been incredibly hot here (in the 90's consistently and humid). I have three other hens that have continued laying though (different breeds). I'm confused! Any thoughts?