Bear Killed in Jersey
06-11-2005, 10:22 AM
#12
Giant Nontypical
Join Date: Feb 2003
Location: Gambrills Md US
Posts: 6,080
RE: Bear Killed in Jersey
Before you go, check out the wealth of information on the internet about grizzlies being "MORE AGGRESSIVE" than black bears.
Here is one example of many:
Black Bears (Ursus americanus) and
Grizzly Bears (Ursus arctos horribilis)
Yellowstone is home to two populations of bear species -- black bears, which are fairly common, and their rarer cousins, grizzlies. According to recent estimates, there are some 300 to 600 grizzlies within the park.
There are clear physical and behavioral differences between black bears and grizzly bears. Black bears are primarily adapted to use forested areas and their edges and clearings. Although grizzly bears make substantial use of forested areas, they also make much more use of large, non-forested meadows and valleys than do black bears. Black bears have short, curved claws better suited to climbing trees than digging. This enables black bears to forage for certain foods, such as mast, by climbing trees. In contrast, grizzly bears have longer, less curved claws and a larger shoulder muscle mass better suited to digging than climbing. This enables grizzly bears to efficiently forage for foods which must be dug from the soil such as roots, bulbs, corms, and tubers, as well as rodents and their caches.
Behaviorally, black bears are generally much less aggressive than grizzly bears and rely on their ability to climb trees to allow themselves and their cubs to escape predators such as wolves, grizzly bears, or other black bears. Grizzly bears are generally one and one-half to two times larger than black bears of the same sex and age class within the same geographic region. Grizzly bears are also more aggressive than black bears and more likely to rely on their size and aggressiveness to protect themselves and their cubs from predators or other perceived threats.
Did you know? Another behavioral difference between black bears and grizzly bears is the length of time cubs are under their mother's care. Black bear cubs are born in the winter den, spend the summer following birth with their mother, den with her again in the fall, then separate from her early the next summer as yearlings. Grizzly bear cubs spend two and one-half and sometimes three and one-half years under their mother's care before separation.
Here is one example of many:
Black Bears (Ursus americanus) and
Grizzly Bears (Ursus arctos horribilis)
Yellowstone is home to two populations of bear species -- black bears, which are fairly common, and their rarer cousins, grizzlies. According to recent estimates, there are some 300 to 600 grizzlies within the park.
There are clear physical and behavioral differences between black bears and grizzly bears. Black bears are primarily adapted to use forested areas and their edges and clearings. Although grizzly bears make substantial use of forested areas, they also make much more use of large, non-forested meadows and valleys than do black bears. Black bears have short, curved claws better suited to climbing trees than digging. This enables black bears to forage for certain foods, such as mast, by climbing trees. In contrast, grizzly bears have longer, less curved claws and a larger shoulder muscle mass better suited to digging than climbing. This enables grizzly bears to efficiently forage for foods which must be dug from the soil such as roots, bulbs, corms, and tubers, as well as rodents and their caches.
Behaviorally, black bears are generally much less aggressive than grizzly bears and rely on their ability to climb trees to allow themselves and their cubs to escape predators such as wolves, grizzly bears, or other black bears. Grizzly bears are generally one and one-half to two times larger than black bears of the same sex and age class within the same geographic region. Grizzly bears are also more aggressive than black bears and more likely to rely on their size and aggressiveness to protect themselves and their cubs from predators or other perceived threats.
Did you know? Another behavioral difference between black bears and grizzly bears is the length of time cubs are under their mother's care. Black bear cubs are born in the winter den, spend the summer following birth with their mother, den with her again in the fall, then separate from her early the next summer as yearlings. Grizzly bear cubs spend two and one-half and sometimes three and one-half years under their mother's care before separation.
06-11-2005, 10:25 AM
#13
Giant Nontypical
Join Date: Feb 2003
Location: Gambrills Md US
Posts: 6,080
RE: Bear Killed in Jersey
Another of many:
Grizzly Bear
Identifying a Grizzly Bear
Color varies from blond to black. Often medium-to dark-brown legs, hump, and underparts with light-tipped (grizzled) fur on head and upper body.
Average weight is 500 pounds for males and 375 for females. Males may weigh up to 900 pounds.
Height is 3.5 – 4 feet at shoulder when on all fours, and 6 –7 feet when standing upright.
Distinctive shoulder hump is actually muscle mass that enables powerful digging.
A dished-in profile between eyes and end of snout helps distinguish grizzlies from black bears.
Ears are round and proportionately small.
Front claws are 2-4 inches long, slightly curved, and good for digging. Claw marks are usually visible in tracks.
Behavior
Usually more aggressive than black bears.
Grizzly Bear
Identifying a Grizzly Bear
Color varies from blond to black. Often medium-to dark-brown legs, hump, and underparts with light-tipped (grizzled) fur on head and upper body.
Average weight is 500 pounds for males and 375 for females. Males may weigh up to 900 pounds.
Height is 3.5 – 4 feet at shoulder when on all fours, and 6 –7 feet when standing upright.
Distinctive shoulder hump is actually muscle mass that enables powerful digging.
A dished-in profile between eyes and end of snout helps distinguish grizzlies from black bears.
Ears are round and proportionately small.
Front claws are 2-4 inches long, slightly curved, and good for digging. Claw marks are usually visible in tracks.
Behavior
Usually more aggressive than black bears.
