The point is moot, now.
Samuel went into the chicks brooder, had them cornered, in a hostile stance. I grabbed him and restrained him. I shut the brooder before returning him to the coop.
Martha was standing there, didn't defend the chicks at all, though I have seen her launch at the other hens if they came close.
Later I was standing outside the door to the coop and the chicks started screaming. I looked and Samuel was chasing them around the coop, not giving pecks, but was in full out attack mode, focused on them like prey.
I took him out and dispatched him out of sight of the others. It's the first time I have had to do that task, and I cried.
I can now see a pattern, from an initial attack that left a chick unconscious with a head wound, then a second attack the next day with a worse wound, to the other examples of him being aggressive against the chicks, which I saw. None of the hens have done more than a short peck, none have chased the chicks.
Thanks for everyone's input.
I'm so sorry you had to go through this, especially after loosing Joël.
And I also believe you did what you had to do in your circumstances.
To challenge a bit this idea of "normal" roosters not being a threat for chicks, and let you know Samuel wasn't an exception, I would like to recall my own first experience of a rooster with chicks. I apologise as this is just an old story, and rather long and tedious, for those of you that were on this thread then.
Almost 2 years ago, I was just like you Fuzzi, asking here about my rooster Théo showing aggressive behaviour toward the chicks and the broody, with this video.
I was given more or less the same answers.
Théo, unlike Samuel, never actually hurt the chicks. But this was mostly due to the fact that the broody Chipie protected them ; most of the times not physically, as she had already taken a beating by Théo after fighting him a few months before, but by taking the chicks away from his reach. If she was cornered, like in the video she did try to protect them.
They were free ranging, and I stay at home, so this meant less possibilities of dangerous situations. I really wanted to try to keep Théo.
Those four chicks grew away from the flock. They only shared the coop with the other adults at night, and when it was raining. Théo kept chasing the girl chicks away, without hurting them, but he attacked and terrorised Gaston, the cockerel.
Long story short, two years after, another hatch, and Théo still here but now dominated by Gaston... things have gotten better. I know that he will systematically chase and be aggressive to any newcomers, chicks or adults. He considers them strangers. However, he has never really came to hurt any other chickens. He is a pain for the hens, because he keeps trying to tread them and is so clumsy he rarely succeeds, but he doesn't actually wounds them. He is half bantam when two thirds of the hens are standards which maybe explain s his difficulty and the fact that they are less afraid of him. And when he lost dominance, the possibility of him harassing them really diminished, and he now spends a good part of his day avoiding the dominant rooster. I think his change of status has been the key to making him somewhat nicer, and that it may have also played a role the other way round into Samuel's behaviour.
Théo's manners with females and youngsters nowadays is sometimes inadequate, sometimes fine, and even endearing. For example, one of my original ex-batt's Blanche is very unwell, taking a long time to die, and he watches over her most of the day carefully. He will look out for her whenever I put her in isolation in all the places he knows she can be. However, he also tries to mate her every now and then, which is unacceptable in her state.
I really don't mean to say that it could have worked out with Samuel that way. The flock and the chicks needed to be protected from him. He was causing harm.
But I just want to say that not all roosters will have the perfect, or even the usual attitude toward other members of the flock, and it can eventually work out if the chicken keepers have the possibility to adapt their settings, or their behaviour, or their expectations.
Not all humans are great with others of their kind but there is a wide range between being impolite or moody and actually hurting people.
And I also want to insist that it's not only about the environment or the keeper's posture. None of the three other males that grew up here have shown those type of behaviour and temper.
June 2022 Théo sharing some cherries.
Two weeks ago.