I have the same problem with my hens. Bo is the head girl. She's an early riser & squawks & clucks until the other three girls are up & out of the house. I've tried locking them up until later, but Bo & Sexy both squawk inside the coop! "shooshing" her used to work, but not anymore. Now that all four girls are laying, they seem to take turns squawking during the day (the "egg call"), and they also take turns on the nest. Fortunately, none of mine have really gone broody, yet.....