I don't notice this is the yard, so hopefully it's something on my poop board 'eating' the hen's poop rather than an internal parasite. When I clean up the poop board in the morning, several of the piles of poop look as if a parasite of some kind has been through the poop. It's spread out in a pile of dry, fine, tiny crumbles. There's no noticeable parasites in the piles.
What could this be? It's happened in both of my 2 coops.