I have read the posts on this forum regarding clipping wings. What I don't see is the breed being stated. I'm sure smaller breeds are different then full size chickens? I have been told that if you clip the wings and you aren't sure if it's right, and it bleeds, they will bleed to death. I don't know when they are fully feathered or not. I have Two RIR Roos, and a Black Australorp Roo, Barred Rock pullets, black australorp pullets, sex link pullets, silver wyandotte pullet, and RIR pullets. They are all 13 weeks old. To me they look fully grown? I have them in an enclosed area with bird netting. I want to let them out and free roam, but they fly. Research with these breeds say they DO fly. I can't seem to find out, to be safe, at what age to start clipping their wings so they can be let out. They are always losing feathers anyway. I do live in a warm weather climate, southern New Mexico and the nights are starting to get cooler. Can any please advise?