Mark and I sit in the hot tub most mornings and read a bit of the Bible and other spiritual writings and we are often serenaded by hens who have just laid an egg. We wondered why they do that and learned that the noise is termed "cackling," and done to announce to the rooster that they ain't in the mood. Apparently right after laying an egg isn't the best time for fertilization. You can listen
to this video and hear what we are talking about.