Hi I am new to Backyard and need some advice please. I have 4 chickens and one seems to be sick. She has been on her next for 3 days and will not get off. She has not been laying eggs. I have carried her off her nest yesterday and she drinks a lot, eats a little and goes back. Today I put her in the yard with the other 3 and one of the chickens started to attack her. ( they were all raise together and are a little over a year old and have always gotten along. So I put he mean one in the coop and let the other 3 outside. She is acting normal ( scratching and moving around) She has not laid an egg in at least 4 days and since she has been on the next she has not pooped ??? Any suggestions ??? Any advice would be appreciated.