where do orcs and uruk hai come from
Uruk-hai The chapter "The Uruk-hai" details some differences among the orcs. The raiding party included orcs from Mordor led by Grishnákh, Saruman's "fighting Uruk-hai" from Isengard led by Uglúk, and "northerners", orcs from Moria. It was the dead Uruks from Isengard whom Aragorn found remarkable. The Uruk-hai of Isengard were the tallest of these orcs, and had large hands and thick legs. The orcs of Mordor were all long-armed and crook-legged, not as tall as the Isengarders but larger and more powerful than the orcs from Moria. The orcs of Moria in turn could see better in the dark than the Isengarders. Grishnákh from Mordor is described as "short" but "very broad". In The Return of the King the orcs Shagrat and Gorbag are identified as Uruks of Mordor.