Hi there!
I'm new to the whole "chicken" thing. I just purchased 4 hens a few weeks ago. Two of them have just matured enough to start laying, the other two haven't quite started yet, but they are all around the same age. I have two Golden Comets (or Red Stars, or Red Sex Links.. whatever you'd like to call them) and two Buff Orpingtons. One of the buffs (we call her Scramble) and one of the Goldens (we call her Frizzle), have started laying. Scramble is the big boss and she does not exhibit this little "chicken dance" behavior, but Frizzle is lower on the totem pole and whenever I open one of the doors to the coop or the run, she comes right over to me, squats down, lifts her wings a bit, and stomps on the ground like she's dancing. I love it! It's hilarious! I give her a little petting and scratchin and then she wanders off and fluffs her feathers a bit. Judging by the rest of the replies, it looks like I'm a rooster?! Hahahaha!!!