My husband loves the crowing. I have used this to my advantage. I told him if he likes the noise of the roosters he will just love peacocks. Ha ha. So now I have permission to get some just gotta find some that I do not have to sell some of my organs first to afford them.
Peacocks are fantastic alert birds. My neighbor has some and I love them. They let you know whenever things are not right in the world. If an unusual truck drives down the road, they alert. If a hawk is about, they alert. The chickens learn to pay attention to the other birds' alarm calls. I was surprised that the peacocks didn't alert when my parrots buzzed right over their heads the other day. They must now know my parrots are not a threat, but it still surprised me they just calmly stood there when a huge red bird with a 4-foot wingspan swooped down inches from their heads.
My parrots pay attention, too, so between the peacocks, my neighbor's rooster and my parrots (who alert for hawks), we've got a pretty good alarm system for predators in the sky and sometimes for foxes. My own free ranging chickens are a little young to be very vigilant, but they are learning. This morning my parrots were yelling about some sort of avian monster in the sky (usually a harmless vulture) and my chickens were all on alert, looking for the danger.
The down side of peacocks is they have a call that sounds like a woman screaming, Help Me! Neighbors often really hate having peacocks around. I would love to have peacocks, but I think I've pushed the limit of my neighbor's patience with my parrots and a rooster or two.