They're Aseel/Asil.
Though Ga Noi are an Aseel/Asil strain originating from Vietnam. They have a couple other strains as well that have different names.
Clarification: Game Birds are like Quails, Ducks, Turkeys, Doves, Chukar, & Pheasants.
Gamefowl are a breed of(American, Spanish, & Asian)...