Guardian Nature School Team Contact Blog Project Noah Facebook Project Noah Twitter

A worldwide community photographing and learning about wildlife

Join Project Noah!
nature school apple icon

Project Noah Nature School visit nature school

Black bear

Ursus americanus

Description:

The American black bear is a medium sized bear found in north America. The skulls of black bears are broad with narrow muzzles and large jaw hinges. The average length of the black bear's skull is 262mm to 317mm long. Females tend to have more slender, pointed faces. Their claws are greyish brown, they are also short and round. The ears are small, rounded, and set at the back of their head. Adult males weigh between 57 to 250kg. Females weigh 41 to 170kg. Adults are 120 to 200cm long. Other species that share the same environment is other aggressive bear species, such as the now extinct short faced bear, and the still living brown bear. The short faced bear would have been much larger than the average bear. The short faced bear is a carnivore. The long legs of the bear shows that it may have been able to run cheetah speeds to catch it's prey. The brown bear is a large bear that weighs between 100 to 635 km. The brown bear is also known as the grizzly bear. They have long thick fur ,and in north America either have dark brown, almost white or yellowish brown fur. Brown bears have long curved claws. Their feet are quite large. Black bears feature an odd symbiotic relationship that is mutualism, bacteria within the bears stomach will feed on food that the bear cannot digest, thus helping the bear as well as the bacteria. The bear is made for it's environment because of first of all it's large claws, are able to rip and eat from trees, climb trees, and kill prey, it's fur can also protect it from whether. this species uses sexual reproduction, sows usually produce their first young at the age of 3-5 years. The breeding occurs in June and July, males try to breed with more than one female, more aggressive males try to claim one female for themselves. The fertilized eggs do not enter the whom until November, the gestation is a 235 day posses. The cubs are born at January or February, usually with litters of 3, but litters of 6 have been recorded.

Habitat:

The habitat of the Black bear is in North America, it tends to be a rugged environment with lots of shrubbery. Up to 85% of the black bears diet is vegetation. They eat fewer roots, bulbs, corms, and tubers than other species. When first emerging from hibernation the bears feed on killed animals and newborn ungulates. The black bear also feeds on fish, Black bears rarely hunt deer or other similarities. In Labrador however black bears are strictly carnivores feeding off caribou. Nothing really does eat the black bear. Black bears are very dominant in their environment, they stay alone, they are also very aware of their environment.

Species ID Suggestions



Sign in to suggest organism ID

No Comments

Edmonton Public
Spotted by a stud ent at Edmonton Public

Alberta, Canada

Spotted on Jul 20, 2009
Submitted on Oct 31, 2013

Related Spottings

Ursus thibetanus Polar bear Brown bear Black bear

Nearby Spottings

Bighorn Sheep Bighorn Sheep Elk Unnamed spotting
Noah Guardians
Noah Sponsors
join Project Noah Team

Join the Project Noah Team