How old are orcs in Lord of the Rings?

In conclusion: Really infamous orc: Possibly 500 years, at least 319 Known orc: 150-200 years Peons: ~100 years Uruk-hai(Saruman Breed): 3-4 years [1] – Tolkien, The Hobbit, ch. 1: "An Unexpected Party".

How are ORCS born in Lord of Rings?

Tolkien proposed several theories for the origins of orcs. In The Fall of Gondolin Tolkien wrote that "all that race were bred by Melkor of the subterranean heats and slime." In The Silmarillion, Orcs are East Elves (Avari) enslaved, tortured, and bred by Morgoth; they "multiplied" like Elves and Men.

How were the Uruk Hai created?

In the War of the Ring, the Uruk-hai made up a large part of Saruman's army, together with the Dunlendings, man-enemies of Rohan. There are suggestions that the Uruk-hai were the result of crossbreeding orcs and men. The Uruks of Saruman used an Elf-rune wrought in white metal on the front of their iron helms.

What happened to the orcs in the 4th Age?

Orcs fled and scattered. Some likely lingered in the misty mountains or miserable holes for a few generations – may have occasionally scavanged and plundered and formed small colonies, but they never again hindered or matched men in battle.