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Post by arctozilla on Dec 2, 2021 13:48:32 GMT -5
/\ well but it is still an impressive kill. A subadult beluga whale still dwarf average-sized polar bears inc. even adult males. A male polar bear killing an adult female beluga whale is also still impressive too, the whale is still more than twice as larger.
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Post by arctozilla on Dec 3, 2021 15:47:05 GMT -5
Linblad Expeditions reports female polar bear killing a narwhal 3 times as heavy as herself, note also the fresh wounds.
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Post by fluffyfatbear on Dec 3, 2021 16:11:07 GMT -5
Holy moly that’s a good find
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Post by oldindigosilverback on Dec 3, 2021 16:14:51 GMT -5
I have been looking for these accounts for a while. They were posted on another forum years ago.
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Post by oldindigosilverback on Dec 3, 2021 16:18:17 GMT -5
If we use the square root cube law, a male polar bear despite being pound to pound stronger than a female polar bear, will be unable to drag an 11000 pound elephant tusker even if close to one tonne.
I thinks it’s the same law where a female cougar can take down an 800 pound bull elk yet an exceptionally large 200 pound male cougar is unable to take down a 1600 pound animal.
According to square cube law, size increases quicker than strength.
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Post by arctozilla on Dec 4, 2021 8:31:50 GMT -5
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Post by Montezuma on Jan 3, 2022 5:30:38 GMT -5
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Post by oldindigosilverback on Jan 3, 2022 5:33:20 GMT -5
Nice source above. By now we all know that polar bears kill belugas.
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Post by oldindigosilverback on Jan 3, 2022 5:38:42 GMT -5
/\ To be honest, it is very hard to spot a polar bear in the wild except at large food sources. Therefore, I am not surprise that a lot of things happen while we are not watching. Here are more videos on polar bears than there are videos on Ussuri brown bears interaction with Siberian tigers surprisingly.
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Post by Montezuma on Jan 3, 2022 5:43:22 GMT -5
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Post by oldindigosilverback on Jan 3, 2022 5:48:37 GMT -5
/\ Musk oxens weigh 800 pounds at max. Male polar bears are generally larger and stronger than musk oxens.
Looks like the polar bear has more experience with ungulates than previously thought.
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Post by Montezuma on Jan 3, 2022 21:39:16 GMT -5
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Post by oldindigosilverback on Jan 4, 2022 6:34:11 GMT -5
Killing a beluga actually takes longer than killing a bovine. These whales have literally no neck which means dying for them must be extremely painful.
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Post by Gorilla king on Jan 10, 2022 20:52:28 GMT -5
Yes, they can: polar bears Ursus maritimus successfully hunt Svalbard reindeer Rangifer tarandus platyrhynchus
Abstract
The polar bear Ursus maritimus is one of the species most endangered by the rapidly declining sea–ice cover in the Arctic, which they use as a platform to hunt fatty, high-energy seals. In recent decades, more polar bears have been forced to remain longer on land, so their access to seals is limited. The importance of terrestrial food to polar bears is disputable, and more data are needed. Terrestrial ungulates could be an attractive substitute prey for them. Svalbard reindeer Rangifer tarandus platyrhynchus are prevalent and their distribution is completely within the range of polar bears. They constitute an attractive potential prey offering a significant energy return. Pre-2000 sources state that polar bears do not attack Svalbard reindeer. This report is the first description and documentation of the complete course of a polar bear hunt for adult reindeer in Hornsund, SW Spitsbergen, and also of the bear’s hunting behaviour and the reindeer’s response. Further, we report several other recent instances of bear–reindeer interactions in Svalbard, suggesting that polar bears now hunt reindeer more frequently than they used to. This increase in hunting is probably linked to the reduced ice cover, with bears spending more time on land, and a growing reindeer population. This study adds to earlier papers on how polar bears in Svalbard have increasingly shifted to a more terrestrial diet, and indicates that they may have an enhanced role as an apex predator in the terrestrial ecosystem.
link.springer.com/article/10.1007/s00300-021-02954-w
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Post by Gorilla king on Feb 18, 2022 20:59:38 GMT -5
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Post by arctozilla on Feb 19, 2022 8:01:31 GMT -5
/\ wow never seen it before. It is also written in Russian.
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Post by Gorilla king on Jun 26, 2022 10:56:25 GMT -5
What to eat now? Shifts in polar bear diet during the ice-free season in western Hudson Bay
Abstract and Figures
Under current climate trends, spring ice breakup in Hudson Bay is advancing rapidly, leaving polar bears (Ursus maritimus) less time to hunt seals during the spring when they accumulate the majority of their annual fat reserves. For this reason, foods that polar bears consume during the ice-free season may become increasingly important in alleviating nutritional stress from lost seal hunting opportunities. Defining how the terrestrial diet might have changed since the onset of rapid climate change is an important step in understanding how polar bears may be reacting to climate change. We characterized the current terrestrial diet of polar bears in western Hudson Bay by evaluating the contents of passively sampled scat and comparing it to a similar study conducted 40 years ago. While the two terrestrial diets broadly overlap, polar bears currently appear to be exploiting increasingly abundant resources such as caribou (Rangifer tarandus) and snow geese (Chen caerulescens caerulescens) and newly available resources such as eggs. This opportunistic shift is similar to the diet mixing strategy common among other Arctic predators and bear species. We discuss whether the observed diet shift is solely a response to a nutritional stress or is an expression of plastic foraging behavior.
A polar bear looks up from the recently killed caribou it was eating at Keyask Island (58.16958°N 92.85194°W) on July 26, 2010. Photograph by R. F. Rockwell.
www.researchgate.net/publication/258504341_What_to_eat_now_Shifts_in_polar_bear_diet_during_the_ice-free_season_in_western_Hudson_Bay
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Post by arctozilla on Aug 24, 2022 15:33:03 GMT -5
Polar bears strike the whales with their paws and drag them out of water.  books.google.it/books?id=gxfYAAAAMAAJ&q=At+such+times+,+polar+bears+strike+the+whales+with+their+great+forepaws+and+drag+them+out+onto+the+ice+.&dq=At+such+times+,+polar+bears+strike+the+whales+with+their+great+forepaws+and+drag+them+out+onto+the+ice+.&hl=it&newbks=1&newbks_redir=0&source=gb_mobile_search&sa=X&ved=2ahUKEwjyi8SuqeD5AhUkX_EDHePOABsQ6AF6BAgMEAM |
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Post by arctozilla on Oct 18, 2022 8:58:58 GMT -5
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Post by oldindigosilverback on Oct 19, 2022 7:09:57 GMT -5
/\ While belugas do not have much offensive weapons, they are difficult animals to kill. In fact there is no quick way to kill them.
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