Map - Farallon de Pajaros (Farallon de Pajaros)

Farallón de Pájaros (from Spanish Farallón de Pájaros, meaning "Birds' Sea Stack", see Stack (geology)), also known as Uracus or Urracas (from Spanish Urracas, meaning "Magpies"), is a small (2.3 km2) uninhabited volcanic island, the northernmost island in the Northern Mariana Islands chain.

Farallón de Pájaros was ceded by Spain to Germany through the German–Spanish Treaty (1899), toghether with the rest of the Mariana Islands (except Guam). The formalities of cession were carried on November 17, 1899, in Saipan, for all the Northern Mariana Islands.

From 1899 to 1914, Farallón de Pájaros was controlled by the German Empire and was administered as part of the colony of German New Guinea. In 1903 the island was leased to a Japanese company, which hunted birds whose feathers were exported to Japan and then to Paris.

After World War I, the island was awarded to the Empire of Japan, by the League of Nations as part of the South Seas Mandate. After World War II, Farallón de Pájaros was awarded to the United States as part of the UN Trust Territory of the Pacific Islands, and is currently administered as part of the Northern Islands Municipality of the Commonwealth of the Northern Mariana Islands.

In 1985, per the Constitution of the Commonwealth of the Northern Mariana Islands, the island was designated as a wilderness area for the protection and conservation of natural resources. Since 2009, the island has been part of Marianas Trench Marine National Monument of the United States.