I sexed my chicks by looking at their wing feathers at a day old, and it seemed to match quite well with the instructions I followed. Today, at 2 weeks old, the pullet looked like she was trying to crow! She stretched her head up, opened her beak, and tilted her head back. She may have been gagging, because the down is falling off fast, but it was a peculiar way to do it! Has anyone had a silently crowing chick that grew into a hen?