Could work. Beauty adds some value to the farm, I would think, though it's not as tangible as a sandwich. Some poultry are good at picking up insects and can eat hundreds or thousands of them, while other birds seem more intent on scratching up and destroying planted areas, eating a lot of vegetable matter. I don't know that much about peacocks, so not sure which group they are in. Beautiful birds for sure.
Thanks man. I know that they should eat some pests, but could also fly into the garden, so I'll have to think about fences. We will see!