East Siberian Brown Bear

[brobear]

Jan 13, 2019 6:49:19 GMT -5 brobear said:

Interesting find Kodiak - There are currently eight different subspecies of brown bear that are recognized by Safari Club International.

( 1 ) Siberian Brown Bear - Ursus arctos collaris. 
( 2 ) Eurasian Brown Bear - Ursus arctos arctos. 
( 3 ) Amur Brown Bear - Ursus arctos lasiotus.
( 4 ) Kamchatka Brown Bear - Ursus arctos beringianus.
( 5 ) North American Brown Bear - Ursus arctos horribilis ( grizzly ). 
( 7 ) Kodiak Brown Bear - Ursus arctos middendorffi. 
( 8 ) Alaska Peninsula Brown Bear - Ursus arctos ( gyas or horribilis )?
( 9 ) Sitka Brown Bear - Ursus arctos sitkensis.

Each of these subspecies is unique in its own way. They are one of the most interesting, powerful, awe inspiring animals on earth. The more I learn about them the more fascinated I am by them. 
 
Note: I would assume that the Himalayan "red Bear", the Tibetan "blue bear", and the Gobi bear are all U.a.arctos?

Siberian Brown Bear - Ursus arctos collaris.

[brobear]

Siberian Brown Bear - Ursus arctos collaris. 
 

[King Kodiak]

The Siberian Brown Bear was identified as separate brown bear subspecies Ursus arctos collaris by F. G. Cuvier in 1824.

Siberian Brown Bear
HABITAT
Siberian Brown Bears are found in the Altai Mountains of Mongolia, in Northern China around Xinjiang, far Eastern Kazakhstan, and in the Siberian Taiga.

CHARACTERISTICS
They are smaller than Kamchatka Brown Bears, but larger than European Brown Bears.They have long dense fur that is usually dark brown, though it may be cinnamon, pale brown, yellowish brown or even black. Their legs are often darker than the rest of their body. Siberian Brown Bears of the north have white collars which is how their latin name Ursus arctos collaris originated.



Siberian Brown Bear
DIET
Just like other brown bears in the region, Siberian Brown Bears will eat various kinds of vegetation, seeds, nuts, fruit, roots, tubers, small mammals, carrion, and fish. They are, however, more carnivorous than European Brown Bears and are much more likely to take down a caribou or elk.

BREEDING
Mating usually takes place between May and July. Siberian brown bears usually hibernate from October or November into April or early May, though a sow may not emerge with her cubs until late June. Pregnant sows will give birth in the den to usually 2 or 3 cubs in either January or February. The cubs will remain with their mother for up to 2 years.

Ursus arctos collaris Drawing
STATUS
Lifespan of the Siberian Brown Bear is roughly 20 to 30 years in the wild. About 5,000 are found in the Altai Mountains of Mongolia, and over 16,000 can be found in Eastern Siberia. These are the only known population figures and even they are rough estimates.

www.bearsoftheworld.net/siberian_brown_bears.asp

[King Kodiak]

SIBERIAN BROWN BEAR (URSUS ARCTOS COLLARIS)

[King Kodiak]

SIBERIAN BROWN BEAR (URSUS ARCTOS COLLARIS). This one looks like a really big and mean boy.



www.google.com/amp/s/www.researchgate.net/figure/West-Siberian-brown-bear-photo-by-Bulyonkova-t-m_fig1_319413112/amp

[brobear]

This is one of the least discussed bears here at the Domain...
East Siberian Brown Bear - Ursus arctos collaris
The East Siberian brown bear (Ursus arctos collaris) is a population or subspecies of brown bear which ranges from eastern Siberia, beginning at the Yenisei river, north to the Arctic Circle, as far as Trans-Baikaliya, the Stanovoy Range, the Lena River, Kolyma and generally throughout Yakutia and the Altai Mountains. The subspecies is also present in northern Mongolia. East Siberian bears are intermediate in size to Eurasian brown bears and Kamchatka brown bears, though large individuals can attain the size of the latter. Their skulls are invariably larger than those of Eurasian brown bears and are apparently larger than those of Kamchatka brown bears. Adult males have skulls measuring 32.6–43.1 cm (12.8–17.0 in) in length, and 31.2–38.5 cm (12.3–15.2 in) wide at the zygomatic arches. They have long, dense and soft fur which is similar in colour to that of Eurasian brown bears, though darker coloured individuals predominate. Originally, Cuvier's trinomial definition for this subspecies was limited to brown bear populations in the upper Yenisei river, in response to bears there sporting well-developed white collars. The subspecies has since been reclassified as encompassing populations formerly classed as jeniseensis and sibiricus, though the latter two lack the collar. Siberian bears tend to be much bolder toward humans than their shyer, more persecuted European counterparts. Siberian bears regularly destroy hunters' storages and huts where there is food. They are also more carnivorous than their European counterparts and do not seem to like honey. They hunt mountain hares and ungulates such as reindeer, wapiti or moose by ambushing them from pine trees.

[brobear]

East Siberian Brown Bear.

[brobear]

East Siberian Brown Bear.
 
               

[OldGreenGrolar]

/\This bear looks so much like the Ussuri brown bear despite being a different subspecies.

[King Kodiak]

This is one of the least discussed bears here at the Domain...

Not much info on this subspecies. Historically, the Siberian tiger was also in East Siberia but not anymore or basically gone in that area. But we dont have any accounts of interactions between them.

[King Kodiak]

MEASUREMENTS AND WEIGHTS OF ADULT MALE BROWN BEARS IN NORTH-EASTERN SIBERIA (URSUS ARCTOS COLLARIS)

[King Kodiak]

Reply #10: i did the math and based on the 10 specimens with the weights listed, the average for this subspecies is 231 kg (509 lbs). Of course, most likely 5+ year olds were included.

[King Kodiak]

EAST SIBERIAN BROWN BEAR (URSUS ARCTOS COLLARIS)

[brobear]

EAST SIBERIAN BROWN BEAR (URSUS ARCTOS COLLARIS) is a bear we seldom here anything about.

[King Kodiak]

Apr 2, 2021 18:24:25 GMT -5 brobear said:

EAST SIBERIAN BROWN BEAR (URSUS ARCTOS COLLARIS) is a bear we seldom here anything about.

Yeah, barely any info on this bear. And this might be because it barely interacts with tigers. Most people dont know this and i have posted it before, but even though its called "Siberian tiger", there are very few (if any) left in Siberia. Most are in the Russian Far East (which is not officially part of Siberia)