I have a hen that's holding her bottom down like she's pooping. She has done this for about 3 days now. I don't see any injuries. She's not wanting to walk but a few steps, she's eating and drinking fine. I've just started raising chickens and don't know too much yet. Could she be constapated? I went to check on her last night and she was still sitting on the floor of the coop. I went to check this morning and she was out but there was an egg on the floor so I'm thinking she didn't get on the roosting boards. Can someone give me an idea, please.