Ursus
americanus
American Black Bear
Black
bears are usually black in color, particularly in eastern North
America. They usually have a pale muzzle which contrasts with
their darker fur and may sometimes have a white chest spot. Total
body length in males ranges from 1400 to 2000 mm, and from 1200
to 1600 mm in females. Tail length ranges from 80 to 140 mm. Males
weigh between 47 and 409 kg, females weigh between 39 and 236
kg.
Births
occur mainly in January and February, commonly while the female
is hibernating. The number of young per litter ranges from one
to five and is usually two or three. At birth the young weigh
200 to 450 grams each.The cubs are ususally weaned at around 6
to 8 months of age, but remain with the mother and den with her
during their second winter of life, until they are about 17 months
old. .
Black
bears can live to 30 years in the wild but most often live for
only about 10, primarily because of encounters with humans. More
than 90% of black bear deaths after the age of 18 months are the
result of gunshots, trapping, motor vehicle accidents, or other
interactions with humans.
Bear
nuisance activities are usually associated with sources of artificial
food and the very opportunistic feeding behaviors of black bears.Black
bears have been known to occasionally raid livestock, damage cornfields,
berry and honey production. Some bears have become troublesome
around camps and cabins if food is left in their reach. Black
bears have severely injured and sometimes even killed campers
or travelers who feed them. However, fewer than 36 human deaths
resulted from black bear encounters in the 20th century. Black
bears are generally very timid and when black bear mothers confront
humans, they typically send their cubs up a tree and retreat or
bluff. People who live in or visit areas with black bears should
be aware of the appropriate precautions for avoiding black bear
encounters. Black bears can run as fast as 25 miles per hour while
they chase prey, and they are skillful tree climbers.
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