My hen has seemingly forgotten how to jump off the roost! She is 1 1/2 years old. This is the same coop, the same roost and the same chicken family she's been with for all that time. I noticed this over a week ago. My DH or I have to go out there every morning and herd her off the roost. She's always on the top -- which is about 4 1/2 feet high, she hops to the middle level and then squaks and flies to the floor, bypassing the lower level. The first time I noticed her through the coop's window, it was late afternoon! She hadn't eaten or had anything to drink since about 8pm the night before! Could she really have just 'forgotten'? No other weird behaviors. Weird!! Cathi B.