Brown Bear (Ursus Arctos)

[full]

Sad photo from one of those despicable zoos which houses diffrent carnivorian species in the same enclosure, the inevitable has happened here:

[brobear]

Point: There is no such animal as "the average grizzly" ( Ursus arctos ). Each individual bear is every bit as unique as are each human. As for "average size", each individual bear population is unique in terms of bear size, coat coloration, and many other factors.

[DonaldCengXiongAzuma]

The brown bear has the largest weight range from the little Himalayan brown bear/red bear to the Kodiak bear.

[TigreFeroce9]

Young healthy amur tigress killed by bear

In the course of our ongoing scientific study of tigers in Sikhote-Alin Biosphere Reserve, on November 7, 2009 we captured two 1.5-year old tiger cubs, a brother and a sister, whom we named Anya and Valera. Anya received a GPS collar, the newest in radio-collar technology, which would provide us vast amount of important information about her movements, her daily habits, and her life as a whole as she grew up.

At this time, Valera still lives in the same region of the Reserve where he was captured. Apparently, he still follows his mother from time to time, and has not yet dispersed to seek out his own territory. As for Anya… on February 11, 2010 during a regularly scheduled flight to obtain locations for our tigers, we discovered that Anya’s collar had switched to mortality mode. At that time her location was in the very center of the Reserve, on the Kolumbe river. In search of her own home range, Anya had migrated surprisingly far from her mother.

The Kolumbe River basin is perhaps the least accessible area of the reserve, with no trails or cabins. For this reason, on February 17th, Siberian Tiger Project specialists took a helicopter out to the place where Anya’s last location was taken, to determine what went wrong. We had all been hoping that Anya simply lost her collar. However, when our specialists reached the ground, they discovered that Anya had been killed and eaten by a bear.

It is very disappointing to lose a beautiful, healthy young tigress, who had just begun to live on her own, and could have had many litters of cubs in her lifetime. Our only consolation is that hers at least was a natural death

russia.wcs.org/en-us/About-Us/News-Archive/ID/98/OUR-LOSS.aspx

[TigreFeroce9]

A European bear killed two bison bulls in Poland

The bear kills bisons in Podkarpackie. Foresters find another mutilated corpse





Two bodies of bison were found on Saturday in the Lesko Forest District. The first 11-year-old bull had a broken back and was injured by bear claws. Only the remains of the second 8-year-old bison remain.
Vets ruled out human interference, but it is suspected that the bison were killed by a bear. This is indicated by injuries on the bodies and tracks at the place of death of the animals.
- A few years ago in this area we had a case of a bison being killed by a bear, which for several weeks ate its prey just at the threshold of winter - said Wojciech Jankowski from Lesko Forest District, quoted by the State Forests. - It looks like the predator also took this opportunity to catch more bison herds. A deep gorge, to which a bison breaks legs or falls, gives the predator an advantage - explained Jankowski.
The Lesko Forest District is to apply to the Regional Directorate for Environmental Protection in Rzeszów for permission to craft skulls of bison found for educational purposes

translate.google.it/translate?hl=it&sl=pl&tl=en&u=https%3A%2F%2Fwiadomosci.gazeta.pl%2Fwiadomosci%2F7%2C114883%2C22676122%2Ccos-zabilo-te-dwa-zubry-i-na-pewno-nie-byl-to-czlowiek-okaleczone.html

Original Polish article

wiadomosci.gazeta.pl/wiadomosci/7,114883,22676122,cos-zabilo-te-dwa-zubry-i-na-pewno-nie-byl-to-czlowiek-okaleczone.html

[dinosauria101]

^It's worth noting that those bisons had TB. But yeah, good find.

[TigreFeroce9]

The smallest brown bear, the barren ground grizzly killed a bull muskox





pubs.aina.ucalgary.ca/arctic/Arctic35-4-545.pdf

[TigreFeroce9]

Mar 21, 2020 23:56:15 GMT 5 dinosauria101 said:

^It's worth noting that those bisons had TB. But yeah, good find.

How do you know those bisons had TB?

[dinosauria101]

Mar 22, 2020 1:50:54 GMT 5 TigreFeroce9 said:

Mar 21, 2020 23:56:15 GMT 5 dinosauria101 said:

^It's worth noting that those bisons had TB. But yeah, good find.

How do you know those bisons had TB?

I believe someone on Wildanimalwarfare said so. Lemme go get it.

[dinosauria101]

Mar 22, 2020 1:50:54 GMT 5 TigreFeroce9 said:

Mar 21, 2020 23:56:15 GMT 5 dinosauria101 said:

^It's worth noting that those bisons had TB. But yeah, good find.

How do you know those bisons had TB?

Oh my bad. I believe, although I cannot find the original article, that the article itself states they had TB.

[Infinity Blade]

Coupled social and ecological change drove the historical extinction of the California grizzly bear (Ursus arctos californicus)

Large carnivores (order Carnivora) are among the world's most threatened mammals due to a confluence of ecological and social forces that have unfolded over centuries. Combining specimens from natural history collections with documents from archival records, we reconstructed the factors surrounding the extinction of the California grizzly bear (Ursus arctos californicus), a once-abundant brown bear subspecies last seen in 1924. Historical documents portrayed California grizzlies as massive hypercarnivores that endangered public safety. Yet, morphological measurements on skulls and teeth generate smaller body size estimates in alignment with extant North American grizzly populations (approx. 200 kg). Stable isotope analysis (δ13C, δ15N) of pelts and bones (n = 57) revealed that grizzlies derived less than 10% of their nutrition from terrestrial animal sources and were therefore largely herbivorous for millennia prior to the first European arrival in this region in 1542. Later colonial land uses, beginning in 1769 with the Mission era, led grizzlies to moderately increase animal protein consumption (up to 26% of diet), but grizzlies still consumed far less livestock than otherwise claimed by contemporary accounts. We show how human activities can provoke short-term behavioural shifts, such as heightened levels of carnivory, that in turn can lead to exaggerated predation narratives and incentivize persecution, triggering rapid loss of an otherwise widespread and ecologically flexible animal.

royalsocietypublishing.org/doi/10.1098/rspb.2023.0921