Ok so here's the story. We just bought 7 chickens from what we were is a very respectable breeder. 2 of the seven are 8 weeks old and are wondwrful with a small amount of feather loss. The other 5 are what we were told small bantam hens that are 2 years old. Only one of which has a small amount of feather loss on her bum her tail. The others have some major feather loss all around their bums. Dot being the worst. All have laid eggs excepf the 2 babies and Dot.... we have had them for about a week now. Dots bum was very swollen and soft the day we got her and the red swollen butt is gone down. She also acts like she wants to lay and we thoughr she mighr be eggbound. but we arnt sure.. She is still eating and drinking and she sets like she is going to lay but she doesnt.. Her comb and waddle are still very red and she acts normal. I will take some pixs an tey an post them for you but I'm on my phone so it might take a few mins.