We got 6 chicks from IFA last week, 3 golden sex links for us and 3 variety to raise for my mom, Buff Orpington, RIR and Barred Rock. The RIR and one of the GSLs were just starting tail feathers. The Buff Orpington only had wing feathers but she's the biggest one. Or... is this a symptom of being a Roo? A week later, everyone has the start of tail feathers except for the BO. The Barred Rock is the smallest, but does seem to be growing. She is in the middle of the flock in terms of feather development.