So I have a mixed flock of 24 (RIRs, Ameracaunas, Speckled Sussex, WLH, BJG, ISABs and Columbian Rocks)we got as day old chicks back in March and they started laying a few weeks ago (well, at least 6 of them are). Hard to tell for sure which of the girls are laying the six beautiful eggs everyday, but today one of the light tan ones was paper-thin. They're being fed layer pellets and provided crushed oyster shell. Is it that they're just new layers? The egg was a decent size, and I know the BJGs are starting to let our roo cover them. Or are they filling up on grass/bugs/treats? They are kind of "free range" since our chicken run is probably more like a 1/4 acre with a tall fence. Thanks!