In mountainous areas, they seek southerly slopes at lower elevations for forage and move to northerly and easterly slopes at higher elevations as summer progresses. [23] In the state of California, there are an estimated 25,000-35,000 American black bears, making it the largest population of the species in the contiguous United States. [23] American black bears currently inhabit much of their original Canadian range, though they seldom occur in the southern farmlands of Alberta, Saskatchewan and Manitoba; they have been extirpated on Prince Edward Island since 1937. DNA testing confirmed that it was the hybrid offspring of a polar bear mother and a grizzly bear father.1 Hybrids between polar bears and other types of bears have been suspected before,2 but this is the first in-the-wild hybrid to have had its hybrid status proven. Despite the American black bear being more powerful on a one-to-one basis, packs of wolves have been recorded to kill black bears on numerous occasions without eating them. [41], American black bear weight tends to vary according to age, sex, health and season. The hunting methods and seasons vary greatly according to state, with some bear hunting seasons including fall only, spring and fall, or year-round. [4][page needed] Once out of hibernation, mother bears may be able to fight off most potential predators. American black bears are omnivores, with their diets varying greatly depending on season and location. Violent interactions, resulting in the deaths of American black bears, have been recorded in Yellowstone National Park. [66][67][68][page needed] American black bears often mark trees using their teeth and claws as a form of communication with other bears, a behavior common to many species of bears. Volcanic activity during the Flood warmed the oceans, causing high evaporation and precipitation on the land. [114][page needed] In Kwakiutl mythology, American black and brown bears became enemies when Grizzly Bear Woman killed Black Bear Woman for being lazy. But since the offspring are weird looking and probably outcasts, they may have low reproductive success and thereby fail to pass their genes on to the next generation. Along with the brown bear, it is one of only two of the eight modern bear species not considered by the IUCN to be globally threatened with extinction. "This is the first confirmed natural occurrence of something we know to be biologically possible, physiologically possible, and evolutionarily quite reasonable," Paetkau said. Females also give birth in February and nurture their cubs until the snow melts. The fertilized eggs undergo delayed development and do not implant in the female's womb until November. [55][page needed] In 1799, 192,000 American black bear skins were exported from Quebec. Genetic analysis of "pure" polar bear DNA and "pure" grizzly DNA, he adds, shows that interbreeding has not been common. Critically endangered. The animal confirmed last week to be half polar bear, half grizzly bear is certainly weird, scientists say, but he's not necessarily a symbol of global warming or anything else. Has brown or reddish-brown fur, reminiscent of cinnamon. [62] Of 1,028 incidents of aggressive acts toward humans, recorded from 1964 to 1976 in the Great Smoky Mountains National Park, 107 resulted in injury and occurred mainly in tourist hot spots where people regularly fed the bears handouts. [101] There is at least one record of a male American black bear killing two bull elk over the course of six days by chasing them into deep snow banks, which impeded their movements. Upon exiting hibernation, bears retain a reduced heart rate and basal metabolic rate. [90] Other fish, including suckers, trout and catfish, are readily caught whenever possible. Unlike female brown bears, female American black bears are not as protective of their cubs and rarely attack humans in the vicinity of the cubs. [39] The average annual survival rate for adult American black bears is variable, ranging from 86% in Florida to 73% in Virginia and North Carolina. The paws of the species are relatively large, with a rear foot length of 13.7 to 22.5 cm (5.4 to 8.9 in), which is proportionately larger than other medium-sized bear species, but much smaller than the paws of large adult brown, and especially polar, bears.
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