Ok thanks! i haven't noticed any problems! they have slowed down majorly on the egg production though. 4 are molting, i switched feed like 2 months ago, i get 2-3 eggs a day, and i have 18 chickens. like i said 4 are molting.If they poop worms they have worms for sure, but many worms are too small to see.
They can have worms but they might not poop them.
If they look/sick they might have worms.
If they aren't laying properly they might have worms.
If they are losing weight they might have worms.
Best thing to do is figure out how to get their poop tested.
Call around, I'd be willing to bet that you can find a cat/dog vet, or a large animal vet willing to do a test.
It's easy. Collect as fresh poop from a bunch of hens, place in baggy, stir well, take to vet. Should cost $15 to $35.