And it enables you to bond with brooding chicks as they mature, which creates a gentler and much more human-welcoming hen or rooster. Chicken expansion charts could be tricky to find, but a web lookup exhibits how little fluffballs with nubby wings increase into pullets and cockerels. “Fully feathered” is https://www.youtube.com/watch?v=qzLmP0PqK_s