I recently got some 8-10 week old chickens from a guy who has a large farm. I brought them home and they are in quarantine. I have noticed that they are a little smelly. It almost smells like they rolled in poop. I gave them a bath and it didn't take the smell away. My other chickens have never smelt like this, and it is definitely coming from the birds, not the ground where the poop is or anything. Other than the smell, they seem fine, no sickness or anything. They have been in quarantine for a little over 3 weeks and have been stinky the whole time. Any ideas as to why they smell??????