1. What does it look like? 2. By what age does it appear? Whenever I go into the coop with my 3 week olds I'm mobbed by the Delawares. They seem to get great enjoyment out of pecking at my pants, my boots, my whatever is within reach. So far I don't read any of it as aggression, just curious chicks, but I would like to know what behaviors to be on the lookout for as I try to decide which of the boys will have to go.