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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.
The largest herd in North America is known as the Porcupine Caribou herd, with a population of over 200,000 reindeer recorded since 2017. Although other herds have seen a decline in their numbers ...
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.
Both caribou and reindeer have the same scientific name, Rangifer tarandus, and are of the same species. The key thing that differentiates reindeer from caribou is the fact that a reindeer is ...
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 ...
All reindeer and caribou species currently fall under the same species, Rangifer tarandus, and in one of more than a dozen different subspecies. The subspecies native to North America are called ...
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 ...
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]