I have four golden-laced cochins...4 week old chicks that I strongly believe are pullets based on comb color/size. One of them appears to bow and squat when I put my hand in the brooder. She always runs over to me and after bowing and squatting, jumps in my hand. This is EVERY time I put my hand in the box. Does this behavior mean anything...like confirming that she is a pullet??