Our heritage Rhode Island Reds are now 11 weeks old, and in not too many more weeks, our two cockerels, Boss and Johnny, will be crowing. Elaine has made it abundantly clear that she does not care for Boss, who stands beak and head taller than Johnny and much more than that over the three hens.
Elaine calls Boss a "bully" for his constant badgering of Johnny and, frankly to a lesser extent, every other member of our flock of five. I don't imagine that Boss will ever stop bullying Johnny, but I do believe he will become more solicitous of the hen trio, as they and he mature.
I am not sure at which age a cockerel will start sharing his food with the hens, as our late industrial R.I.R rooster Little Jerry was very attentive to the hens and as soon as he would come across any morsel would sound the food call. But I can't remember at what age he began to do that.
The picture below shows Boss on the far left. Johnny is completely out of the picture (the birds are in our chicken tractor) as he spends a great deal of his time avoiding Boss. In any event, I want to keep both Boss and Johnny, but the time may come when Johnny is kept in a separate enclosure.