Farfetch'd is an avian Pokémon that resembles a light brown duck with a white underbelly. It has a flat, yellow beak, brown eyes, a V-shaped black marking on its forehead (similar to a unibrow), and a three-feather crest on top of its head. Its wings are as big as its body and appear to be prehensile enough to substitute for hands. It has yellow legs with webbed feet and a stubby tail.

Farfetch'd is always seen carrying a leek stalk or spring onion. It carries this sprig in its wings, but sometimes chooses to hold it in its beak or feet instead. Unable to live without its stick, Farfetch'd will defend it with its life. Losing the stalk can leave Farfetch'd defenseless, and it will seek out a new one to replace it. Known uses for the stick include use as a weapon, nesting material, and emergency food source. When using the stalk to attack, Farfetch'd wields and uses it like a sword to cut through things. There are several different fighting styles involving Farfetch'd's leek. It is selective about which sticks it will use and has been known to fight over good ones. Farfetch'd is found in temperate grasslands where reedy plants grow, guarding the plants from anyone trying to disturb them. However, Farfetch'd is rarely seen, and thus it is thought that its numbers are decreasing, and that it is at risk of extinction. According to sources such as the anime and the Pocket Monsters Encyclopedia, its population decline is caused by humans who hunted it down for food; one popular recipe suggested cooking it with its own leek. There have been attempts at breeding in order to increase the Farfetch'd population. In the anime, Farfetch’d are shown to be able to swim like real-life ducks.

Forms
Farfetch'd has a regional form: Galarian Farfetch'd.

In Galar, Farfetch'd is a deeper shade of brown, with a more prominent black mark on its head. The leek it carries with its wings is much larger in Galar than the leeks that Farfetch'd use in other regions, although whether it is related to the Large Leek used as a curry ingredient is unknown.

Galarian Farfetch'd's body has developed a much stronger frame that gives it the strength required to carry its leek. However, this sheer mass makes it hard for it to fly. It is renowned for its courage in battle and can use its leek like swords or javelins. As a result of surviving and experiencing many different battles, Galarian Farfetch'd develops the ability to evolve into Sirfetch'd.

Evolution
Galarian Farfetch'd evolves into . Kantonian Farfetch'd is not known to evolve into or from any other Pokémon.

(Source: Bulbapedia)