This rooster has sorted his flock into a VIP section and a no-fly zone, and he's running the feeder like a bouncer with a grudge. The user describes a classic case of feathered favoritism: Creme Legbar RooRoo loves his olive egger hen and their lookalike offspring, tolerates the blind cuckoo maran, and terrorizes the generic brown hen, the welsummer, and the black copper maran. He doesn't hurt them, but he won't let them eat until his preferred three are finished, and he chases them away from treats. That's not just rude chicken behavior, it's a systemic failure of flock management, and we all know a stressed hen stops laying.
What makes this tricky is that RooRoo is otherwise a sweet, calm bird with a quiet crow who has never gone after the human family, until husband tried to intervene. Then RooRoo chased him. That's a red feather. A roo who guards a feeder against three hens is one thing; a roo who goes after a person for protecting those hens is another. The user's instinct to separate the roo from his favored hens for a few days and force him to bond with the bullied ones is a solid starting point, but here's the hard truth: It probably won't work. Roosters don't learn prejudice from peers; they develop preferences based on appearance, behavior, and reinforcement. A few days in the garage won't rewire his little dinosaur brain.
If this were our flock, we'd take a more dramatic step. Separate the roo completely from the entire flock for at least two weeks. Put him in a neutral space where he can see but not reach the hens, so he has to observe them all eating together without being able to intervene. Then reintroduce him with the three bullied hens first, giving him a chance to guard *them* before he ever sees his favorites again. If that fails, you have to ask yourself the hard question: Is a quiet crow worth a half-bullied flock? Because right now, RooRoo has decided that three hens don't belong, and no amount of trampoline time will convince him otherwise if his preference is rooted in feather color. The practical takeaway: You don't have a racist roo, you have a roo who needs to learn that every hen in his care gets equal access to snacks, or he loses his job as head of security.