Chickens are supposed to "sing" when they have laid an egg (or are about to lay an egg? which?). Anyone take a video or sound recording of this? Oh, I searched more thoroughly on youtube and found: This is singing?! My pullets make kind of a gentle crooning noise, which is a little like tuneless humming or singing. I like the crooning, but I'm not so sure about those egg noises. Is that really what I am listening for?