I went out a few mins ago to let the ducks out, but one of them still had her head under her feathers and didn't move for a while. Finally she did wake up and just look at me after I made some noises. The other one just put its head down as if to go back to sleep while I was standing there. I didn't let them out I just closed the pen back up and left them to sleep. I did let George out she is happily foraging around. It has me worried because I have rarely seen them sleeping.