Oh, interesting that roosters actually have more than a (small) social benefit to the hens in providing protection from predators. I thought it was mostly negative (I was aware of roosters attacking hens, etc). I wonder if more, um, sociable roosters could be bred? Maybe just neuter them so you don’t have fertilized eggs and you reduce their aggression? But I suppose that might reduce their effectiveness as a defense against predators.

All very interesting, thanks!

EDIT: apparently there are more calm rooster breeds: “If you want to choose breeds with a reputation for calm or friendly roosters, Faverolles are my favorite, and Barred Rocks are also very nice. Orpingtons and Cochins and Brahmas also have a reputation as nice, calm birds. Many people love Silkie roosters, too.” https://www.mypetchicken.com/backyard-chickens/chicken-help/...