Our peacock, Larry, beat the stuffing out of a hawk:
https://www.backyardchickens.com/t/608864/hawk-attack-stopped-by-larry-the-peacock
Go Larry!
In my neck of woods peacocks are targetted by great horned owls pretty consistently and roost that protected are a bit expensive to build. Turkeys may work but even those are owl bait on occasion. Guinees are very popular with red-tailed hawk and great horned owl.