Interesting about your Sebrights, sierradane.
I have one Sebright, an 8-month old hen. Recently just within the last week, she has started charging my foot as if she is a rooster. About a week ago she did it. It was late in the afternoon and she had not yet laid an egg. The next few days she was just fine, no charging aggression, but today she did it again.
It was after she had been in her nest as if trying to lay an egg, but she hadn't laid one. I was doing some improvements in the coop and she came at my feet several time. She didn't peck, just charged.
When it was nighty-night time, the other hens all got on their perches, but she went under the nesting box, as if still trying to lay. I reached in and she pecked at my hand, which she has never done before. It didn't hurt.
So I think her aggression may have something to do with egg-laying difficulties, or feeling her privacy for egg laying is being invaded?
I have heard that hens of this Sebright breed will often crow like roosters. She hasn't done that yet, thankfully. I wondered whether the rooster had taught her to charge me, whether she'd studied his behavior and decided to copy it, but I don't think so. I have read that Sebrights as a breed are spunky and feisty and can be aggressive. But she's normally so sweet.
I am worried about her. One other time she spent the night under the nesting box and she was fine the next morning, and I found an egg in her nest. The other day when she charged my foot I found two of her eggs in the nest the following morning, so she had laid one of them late in the day on the day she charged my foot. I hope it's not a sign of a tendency toward being eggbound?
I read that Sebrights are poor layers, laying only an egg or so a week, but she has consistently laid an egg almost every day since she started laying this past February.
But if she thinks she's a rooster, maybe she will stop laying entirely???