Some of my favorite behaviors:
One chick grabs a treat, then suddenly that is the treat that all of them must have
One of my chicks will do the funniest things- and be really serious about it. :
When I have one chick perching on my hand, and I lift her up, another one of my chicks (peanut) launches herself at my hand. Same with when I used to have paper towels in the brooder and I'd try to remove one
Please post some funny things that happen to you!