When he put her down.
And yes, I have, several times in fact

.
Théo arrived almost two years after we got the six-ex batts and the habits we always had with them are the source of the problem.
The first 5 months he was here, Chipie was his hen as they arrived together and we had to protect them from the other's bullying, so we didn't see this.
There are several things that I can change in my behaviour to take his role into account, like not going to see the hens when they are making laying drama, or try to give food in a way that they won't run away from him to me. However, some things won't change. My partner will not stop cuddling Vanille, and she jumps on him every chance she gets. I won't let him mate a hen when she's really unwell and unable to move.
Another factor is that he is not successful in mating the hens. Even with the two that will always crouch for him he doesn't have the balance right. And four try to run most of the times he tries to mate. This must be extremely frustrating.
Finally we have never been able to touch him. When he was a cockerel I spent a lot of time trying to hand feed Chipie and him and I was never successful. We have only picked him up once or twice because of emergencies and he freezes completely. Seeing a hand come near him has always made him jump around.