(Warning:This is long, I dont even know were I went w/ this o-O) I've done all 3 ways(in coop/house/brood) and for me using a broody worked best for the flock and the chicks. Hens don't really care for chicks if not broody or prone to brooding heavily! And they re predators so a small random chick gets about the same response as a small wild bird stealing food, aka peck and chase it till it disapears or stops moving :/ my birds know im the flock leader when present even to our roos so when introducing house raised chicks theyd generally stay willingly seperate till theyve been forced to bond over time through experiences and get over the new upstarts. Coop raising was a bit easier socially wise but chicks still took a beating if a upper hen got put off. Slipping them under my broody worked shockingly well! She did everything and anything required and chicks didnt get more than a poke cause mom was body guard. She also teaches them all dangers, plants to not eat, calls etc so it lowers risk of chicks poisoning themselves by chance if there's some plant not cleared away or a predator grabbing a naive bird whith no knowledge of fear cause mom teaches them. I love chicks but I will never raise them in house again and honestly if I have enough birds continously brood for infinite future I may just leave it all to them! Having brood raised chicks have probably been my healthiest fastest growing whith least lost batch of birds in a few years sad to say (we've been having a ton of issues preds, parasites, etc) 6 months into to my current broody raised chicks and theyre finally rediscussing flock pecking order(especially w/ 3 roos currently 0x0) but all birds are in perfect shape and know to only tussle amongst themselves and our 3 older pullets mom and our Dominant RIR hen dont put up whith none of their teenage hormone crap XD!!!