So my mixed flock of a dozen hens (8 are established layers and 4 are new pullets, just starting to lay) aren't leaving piles of poop under their roosts at night . . . perhaps I should just count my blessings, but it makes me wonder. Plenty of poop in the run. Everyone acting fine and eating plenty. No one is laying much, though the littles are just getting started and most of the big girls are at some point of their molt. Thoughts? Concerns? I have sand in my coop, for what it's worth.