I have observed something interesting with my flocks of all ages and I wonder if it would be a reliable indicator of chick gender. As most of you have probably already noticed, when you pick up an adult hen and hold her for a bit then put her back down, she'll shake herself off; same as she'll do after being mated by the roo. Awhile back I learned that the hen does this as a mechanism by which she moves the rooster's sperm up into her sperm "depository". My adult hens do this and my pullets start doing this once they are mature enough to lay. Now I have three chicks, nearly 5 weeks old. Two are confirmed roos, one is still in question. I've noticed that when I pick up the baby roos and put them back down they simply go about their business. However, when I pick the questionable chick up and put her back down, she shakes herself off. I wonder.... Just an observation (and yes, I have way too much time on my hands).