I've noticed my RIR hen growling when the olive egger rooster comes near her. I've seen her put out her wings, fluff up her feathers and go at him like she's going to chase him. I just figured he was a turd (been trying to sneak attack me, and he won't be around much longer) and she didn't like him. But yesterday, I noticed she was on the nest for a while, but didn't lay an egg. She fluffed her feathers up a bit, which she's never done before. I checked for eggs from the other hens under her and pulled out the fake egg in the process. She looked at the fake egg, started making some clucky noises, and put it back under her. But a little later, she was off the nest. So she's not broody yet, but I'm wondering if she's thinking about it. Is the growling broody behaviour? Out of all my chickens, this one would be the worst mother. She's mean to all new chickens in the flock. Maybe she'll surprise me.