We just bought a new rooster Sunday and our hens keep pecking at him. At first they would chase him off too. He and the hens were all hatched in March of this year. We have 6 hens and this rooster, a Rhode Island Red. They seem to be accepting him some now, but they still peck at him some. At night they all roost together, but during the day he spends most of the time apart from the hens. Fortunately some of the hens are starting to be friendly with him. There are still some who aren't though. This one has started being nicer to him. Buddy still hasn't started doing his "rooster duty" though.