Is this a line/inbreeding issue?
Mine were really fertile at the beginning and now 4wks later they are starting to be sketchy. They were in with a few boys, so maybe this cockerel isn't quite doing his job like he should be. The girls slowed up on laying, too. Out of 5 girls, I was getting 2-4 eggs a day. Now I am getting 1. Of course, the best layer is the girl with white ear lobes.
I had that problem with aussies earlier on..even thou I plucked things got a little need of attention..and clean up..then back to bisness..You guys know more about thier genetics..