Lately (for a couple weeks now) whenever any of us hold one of the girls and pet them, once we put them down, the rooster goes after them and bites their necks. It's like he's punishing them. If he's the one who gets pet, and nobody else.. he's just fine w/ that. We give them all treats, at the same time, and pet them while doing it. When we pick them up to hold them, it's not usually treat time.. it's just visiting time. So what's up w/ this roo? Is that normal? Why is he doing that? Any way to stop him? TIA!