I need some advice. We "rescued" about 15 hens and a rooster from a seller on Craigslist. It was dark when we went, so I wasn't able to look over them that closely - but after unloading them here, we realized several of the hens had messy behinds and were lethargic. The next day, they had bloody poop + were fluffed up/eyes closed, and a couple died that day. So, I started treating them with Corid as described on here, and we are 3 days into treatment with everyone starting to perk up and the droppings aren't as yucky anymore (no blood, not as runny), HOWEVER, after inspecting them last night, we saw lots of small worms (they look like pinworms) and tapeworm segments in the poop. Several of the hens have very pale combs/faces, so I am guessing it is anemia. My question is, can I worm while treating with Corid, and what should I use? Secondly, almost all of the chickens are missing a lot of feathers. Could this be from a parasite overload and poor care? The previous owner said they were moulting but I haven't seen so much featherloss in moults before. They are supposed to be 1.5 years old if the seller was telling the truth (who knows, though). They were only fed cracked corn at the previous farm, and here they are getting 16% layer pellets w/molasses mixed in (to help with the anemia), + free range + extra veggies leftover from our friends gardens. Is there anything else I can do to help them?