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Caribou herd ranges. Porcupine caribou's 1,500 miles (2,400 km) annual land migration between their winter range in the boreal forests of Alaska and northwest Canada over the mountains to the coastal plain and their calving grounds on the Beaufort Sea coastal plain, [45] is the longest of any land mammal on earth. In 2019, the herd size was ...
The Porcupine caribou is a herd or ecotype of the mainland barren-ground caribou (Rangifer arcticus arcticus, syn. R. tarandus groenlandicus [1]), the subspecies of the reindeer or caribou found in Alaska, United States, and Yukon and the Northwest Territories, Canada.
Male Porcupine caribou (R. t. groenlandicus) in Alaska, 2005 or earlier. The Porcupine caribou herd is transnational and migratory. The herd is named after their birthing grounds, for example, the Porcupine River, which runs through a large part of the range of the Porcupine herd. Individual herds of migratory caribou once had over a million ...
It includes the Porcupine caribou of Yukon and Alaska. [2] [3] The barren-ground caribou is a medium-sized caribou, smaller and lighter-colored [4] than the boreal woodland caribou, with the females weighing around 90 kg (200 lb) and the males around 150 kg (330 lb). However, on some of the smaller islands, the average weight may be less.
English: Approximate range of subspecies of Caribou (Rangifer tarandus) in North-America. From: Feldhamer, George A., Bruce C. Thompson, and Joseph A. Chapman. Wild ...
The smaller Central Arctic herd (32,000 in 2002), as well as the 123,000 animal Porcupine Caribou herd, likewise migrate through the Brooks range on their annual journeys in and out of the Arctic National Wildlife Refuge. The migration path of the Porcupine Caribou herd is the longest of any terrestrial mammal on earth. [12] [13]
The migratory woodland caribou refers to two herds of Rangifer tarandus (known as caribou in North America) that are included in the migratory woodland ecotype of the subspecies Rangifer tarandus caribou or woodland caribou [1] [2] that live in Nunavik, Quebec, and Labrador: the Leaf River caribou herd (LRCH) [3] [4] and the George River caribou herd (GRCH) south of Ungava Bay.
Small herds of Porcupine caribou (or Grant's caribou, Rangifer tarandus grantii) are frequently found on the island in summer. Muskox, and grizzly bears are occasionally seen, crossing to Herschel from the mainland. Lemmings, tundra voles and Arctic shrews are common. Red and Arctic foxes are also known to den on the island. Natal Arctic fox ...