We have seven hens and one drake all are 5-7 months old and at least two of the hens are laying. One Pekin, two Cayugas, one Rouen, three Welsh Harlequins (one is the drake) and one White Layer. They are in a 1100 sq ft pen during the day and in their house at night (they have no access to food at night). They are eating us out of house and home and I was wondering if this is normal. They are fed layers crumbles. Every time we go outside they come to the fence quacking wanting us to feed them more food, we give them more and they gobble all that up too. Just wondering approx. how much they should be eating? Thanks!