I have a 21 week old cuckoo Marans that is making CRAZY loud "per-clock" sounds. See the YouTube link below if you want to hear it. She laid one egg about 10 days ago, and that was her first. The noise is crazy. Started at 6AM this morning, and has been on and off in multiple fits. If this keeps up, she will have to go (I'm in a suburban backyard). I'll take any advice you have. Concerned that she was egg-bound I checked her vent, but don't really know what I'm checking for.