I have a flock of five hens, 3 barred rock, one RIR and one Americana. They have all molted and were beautiful. Now, four of the hens are losing feathers on their bum. One of the barred rocks is losing feathers around her neck and pretty much all over. The Americana seems to be the leader of the bunch, even though she is smaller. I have cleaned the pen and put DE everywhere and added sand with DE. I'm not sure what's causing this,but it's very frustrating. They free range some, but are given fresh greens every day. Any advice?
