So, my Cochin chicks seem so happy and healthy. I just had a question about sleeping. One of them will start to nod off and then he shakes his head and starts to nod off again. Sometimes he opens his mouth wide after shaking his head. It kind of reminds me of when a little kid nods off and finally realizes that he doesn't want to go to sleep. They are eating and drinking fine and I doubt it's a problem, but just checking to see if this normal behavior.