I have a Black Australorp roo and I love him to bits! he is not supper friendly or anything but he has never attacked us (even though my hubby seems scared of him cause apparently the roo was giving him the "eye" and was about to attack
). As for if they learn or not... I would say no. My RR hen that is from an older batch wants nothing to do with him and will attack him if he tries to "assume the possition" but he trys time and time again.

