Suparnas
The Suparnas (also known as Garudas) were probably the Falcon worshipping or falcon rearing tribes who conquered the Naga territories of north west India. They were arch-rivals of the Nagas. Garuda was a famous Suparna. They had the ability to fly in air without using an aircraft. Some literature tells that they had wings like that of Angels. Some believe that they were birds like the hawk or eagle. Some think that they were a race of intelligent Dragons in the family of Dinosaurs, that became extinct during the dawn of human civilizations. Yet another view is that Nagas and Garudas were the two rival factions of the same tribe. Mahabharata also support this view since it describes the two races originating from two mothers who were sisters.
Read more about this topic: Exotic Tribes Of Ancient India