I went out with the chickens today and one of the chickens was hunched in an area they had scratched up and looks like a nest. After a couple mins she walked away and about half an hour later was doing the same thing. I checked the vent and it was puffier than normal but doesn't appear to have prolapse. I also felt inside and there didn't seem to be anything. We have two chickens we got in the fall and neither has laid an egg yet. Could this just be her getting ready to lay an egg or something more urgent?