Agattu (Angatux̂ in Aleut) is an island in the Near Islands in the western end of the Aleutian Islands. Aleut ( Unangam Tunuu) is a language of the Eskimo-Aleut Language family. An island (ˈaɪlənd or isle (/ˈaɪl/ is any piece of land that is completely surrounded by water in two dimensions above high tide and isolated from other significant The Near Islands ( Sasignan tanangin in Aleut) are the smallest and westernmost group of the Aleutian Islands in southwestern Alaska, at about The Aleutian Islands (possibly from Chukchi aliat, " Island " are a chain of more than 300 small volcanic islands forming a Volcanic With a land area of 221. 593 km² (85. 558 sq mi) Agattu is one of the largest uninhabited islands in the Aleutians. It is the second largest of the Near Islands, after Attu Island. Attu ( Atan in Aleut) is the westernmost and largest Island in the Near Islands group of the Aleutian Islands of It is volcanic and considerably mountainous. The treeless island has a tundra-like terrain which reaches a peak of 632 metres above sea level. In physical Geography, tundra is an area where the Tree growth is hindered by low temperatures and short growing seasons
Agattu has 7 large seabird colonies, and an estimated population of 66,000 birds. About 1% of the global population of Red-faced Cormorants and Tufted Puffins nest on the island. The Red-faced Cormorant, Red-faced Shag or Violet Shag, Phalacrocorax urile is a species of Cormorant that is found in the far north of The Tufted Puffin ( Fratercula cirrhata) is a relatively abundant medium-sized Pelagic Seabird in the Auk (Alcidae family found throughout Other inhabitants include Rock Sandpiper, Red-necked Phalarope, Gray-crowned Rosy Finch and Snow Bunting. The Rock Sandpiper, Calidris or Erolia ptilocnemis is a small Shorebird. The Red-necked Phalarope, Phalaropus lobatus, is a small Wader. The Gray-crowned Rosy Finch, Leucosticte tephrocotis, is a medium-sized Finch. The Snow Bunting ( Plectrophenax nivalis) sometimes colloquially called " Snowflake ", is a Passerine Bird  Aleutian Cackling Geese were reintroduced to the island after foxes were eliminated from the island in the 1970s.  The elimination of the foxes on the island also made it possible for conservationists to reintroduce the Evermann's rock ptarmigan. In 2006 there were reports of at least 25 breeding pairs of the ptarmigan on the island.