The brown bear is a large bear species found across Eurasia and North America. It is one of the largest living terrestrial members of the order Carnivora, rivaled in size only by its closest relative, the polar bear, which is much less variable in size and slightly bigger on average. Adults of different subspecies range in weight from 80 to 600 kg, with males being heavier than females. Despite its name, brown bears aren't entirely brown; the pelage can be reddish to yellowish-brown, and dark brown to cream in color. During winter, brown bears in some populations hibernate and emerge during spring to regain up to 180 kg (400 lb) of weight. They have well developed dentition and claws, ideal for their lifestyle.
The American black bear, also known as the black bear, is a species of medium-sized bear endemic to North America. It is the continent's smallest and most widely distributed bear species. The American black bear is an omnivore, with a diet varying greatly depending on season and location. It typically lives in largely forested areas but will leave forests in search of food and is sometimes attracted to human communities due to the immediate availability of food.
The California grizzly bear is an extinct population of the brown bear, generally known as the grizzly bear. "Grizzly" could have meant "grizzled" – that is, with golden and grey tips of the hair – or "fear-inspiring". Nonetheless, after careful study, naturalist George Ord formally classified it in 1815 – not for its hair, but for its character – as Ursus horribilis. Genetically, North American brown bears are closely related; in size and coloring, the California grizzly bear was much like the Kodiak bear of the southern coast of Alaska. The grizzly became a symbol of the Bear Flag Republic, a moniker that was attached to the short-lived attempt by a group of U.S. settlers to break away from Mexico in 1846. Later, this rebel flag became the basis for the state flag of California, and then California was known as the "Bear State".
The Kodiak bear, also known as the Kodiak brown bear, sometimes the Alaskan brown bear, inhabits the islands of the Kodiak Archipelago in southwest Alaska. It is one of the largest recognized subspecies or population of the brown bear, and one of the two largest bears alive today, the other being the polar bear. They are also considered by some to be a population of grizzly bears.
The Atlas bear or North African bear was a population of brown bear native to North Africa that became extinct in historical times.
The Syrian brown bear is a medium and endangered subspecies of Eurasian brown bear native to the Middle East and West-Central Asia, particularly around the Caucasus Mountains.
The Sierra Madre Occidental pine–oak forests are a Temperate broadleaf and mixed forests ecoregion of the Sierra Madre Occidental range from the southwest USA region to the western part of Mexico. They are home to a large number of endemic plants and important habitat for wildlife.
The Himalayan brown bear, also known as the Himalayan red bear or isabelline bear, is a subspecies of the brown bear occurring in the western Himalayas. It is the largest mammal in the region, males reaching up to 2.2 m long, while females are a little smaller. It is omnivorous and hibernates in dens during the winter.
The Gobi bear, known in Mongolian as the Mazaalai (Мазаалай), is a subspecies of the brown bear that is found in the Gobi Desert of Mongolia. It is listed as critically endangered by the Mongolian Redbook of Endangered Species and by IUCN standards. Currently, there are only 31 bears left in the Mongolian Gobi Desert; through long-term genetic monitoring it is known that the population is relatively stable, however, the sex ratio is highly skewed towards males. Gobi bears are separated by enough distance from other brown bear populations to achieve reproductive isolation. In 1959, hunting of the animal was prohibited in order to preserve the dying subspecies.
The Mexican big-eared bat is a species of vesper bat endemic to Mexico. They are nocturnal and insectivorous. Their very large ears are located across their foreheads, and when captured, the bats are observed to curl their ears in a protective manner. The adults are usually brown colored, while the juveniles are usually a smokey brown color. They have small noses.
Carl Buckingham Koford was an American biologist who is known for his research work on the behavior of the California condor. He attended the Piedmont High School and studied at the University of Washington. Koford began his field work on the California condor in March 1939, spending more than 400 days collecting data. During World War II he interrupted his studies to serve in the U.S. Navy. In 1946 his observations on the condors continued. In 1953 he published the report "The California Condor" where he gave a first estimation of the world population of about 60 individuals. In the 1950s and again in the 1970s he went to South America where he made studies on species like the Vicuña, the Jaguar, the Ocelot or the Jaguarundi. After rumours about the survival of some individuals of Mexican grizzly bear, a species thought to be extinct, Koford went to Mexico in 1969 but failed to rediscover this bear.
Bear hunting is the act of hunting bears. Bear have been hunted since prehistoric times for their meat and fur. In addition to being a source of food, in modern times they have been favored by big game hunters due to their size and ferocity. Bear hunting has a vast history throughout Europe and North America, and hunting practices have varied based on location and type of bear.
The Ussuri brown bear, also known as the Ezo brown bear, Russian grizzly bear, or the black grizzly bear, is a subspecies of the brown bear or a population of the Eurasian brown bear. One of the largest brown bears, a very large Ussuri brown bear may approach the Kodiak bear in size. It is not to be confused with the North American grizzly bear.
Ursus etruscus is an extinct species of bear, endemic to Europe, Asia and North Africa during the Pliocene through Pleistocene, living from ~5.3 million to 100,000 years ago.
The grizzly bear, also known as the North American brown bear or simply grizzly, is a population or subspecies of the brown bear inhabiting North America.
The Alaska Peninsula brown bear or "peninsular grizzly" is a colloquial nomenclature for a possible brown bear subspecies that lives in the coastal regions of southern Alaska. It may be a population of the mainland grizzly bear subspecies.
Formerly or currently considered subspecies or populations of brown bears have been listed as follows:
The brown bear is one of the most omnivorous animals in the world and has been recorded to consume the greatest variety of foods of any bear. Throughout life, this species is regularly curious about the potential of eating virtually any organism or object that they encounter. Certainly no other animal in their given ecosystems, short perhaps of other bear species and humans, can claim to feed on as broad a range of dietary opportunities. Food that is both abundant and easily obtained is preferred. Their jaw structure has evolved to fit their dietary habits. Their diet varies enormously throughout their differing areas based on opportunity. In spring, winter-provided carrion, grasses, shoots, sedges and forbs are the dietary mainstays for brown bears from almost every part of their distribution. Fruits, including berries, become increasingly important during summer and early autumn. Roots and bulbs become critical in autumn for some inland bear populations if fruit crops are poor. The dietary variability is illustrated in the western United States, as meat made up 51% of the average year-around diet for grizzly bears from Yellowstone National Park, while it made up only 11% of the year-around diet for grizzlies from Glacier National Park a few hundred miles to the north.
Brown bears were once native to Europe, much of Asia, the Atlas Mountains of Africa, and North America, but are now extirpated in some areas, and their populations have greatly decreased in other areas. There are approximately 200,000 brown bears left in the world. The largest population is in Russia, with 120,000 individuals. The brown bear occupies the largest range of habitats of any Ursus species with recorded observations in every temperate northern forest and at elevations as high as 5,000 m.
