I give my chickens a few pumpkins in the fall. Pumpkins are a natural de wormer. My girls and boys have never had worms, but I know I have seen poultry de wormer at tractor supply and the local Blue Seal feeds and Agway.
if it is just molting...... not sure I can clarify that too much. If all of the birds are the same age, and all are losing feathers, and they were my birds, I would assume it was moulting.
BOSS (Black oil sunflower seed) will give you added protein to speed up the feather growth process. I...