Brown bear predation accounts

[oldgreengrolar]

The Functional Morphology and Evolutionary Biology of Bears.


Bears typically kill using brute force and do not seem to exhibit any stereotyped killing postures or behaviours as seen in canids and felids (R. Boertje, pers. comm.; J. Hechtel, pers. comm.). Polar bears and brown bears have been observed to attack their prey both with bites and crushing forepaw slaps, apparently to whatever region of the prey’s body is accessible



(Murie, 1985; Boertje et al., 1988; Case & Stevenson, 1991; M. Ramsay, pers. comm; J. Hechtel, pers. comm.). Sacco, T. and Van Valkenburgh, B. (2004), Ecomorphological indicators of feeding behaviour in the bears (Carnivora: Ursidae). Journal of Zoology, 263: 41–54. in this book







books.google.com/books?id=zpRLAQAAIAAJ&q=Bears+typically+kill+using+brute+force+and+do+not+seem+to+exhibit+any+stereotyped+killing+postures+or+behaviours+as+seen+in+canids+and+fel


Feedback: They forgot to say that polar bears aim for the vital areas a bit more when fighting compared to brown bears. Although I support brown bears at weight parity, the polar bears being almost purely carnivorous will instinctively know where to bite.



It seems brown bears are slower killers than felines and even canines (despite having greater brute force).

[oldgreengrolar]

"On the basis of circumstantial evidence and an observed attack by 2 subadult brown bears that drew blood from a lone adult bison (Bison bison), brown bears are suspected to occasionally kill young bison, although none has been confirmed (M. Meagher 1973 and pers. commun.). Observations have also been made of individual brown bears testing lone bison by approaching them and then leaving when the bison ignored them, refused to run, and kept on feeding (M. Meagher pers. commun.). Healthy adult male bison may be too large and well armed for a bear to attack without risk of serious injury to itself. Testing likely helps a bear to identify a sick or weak animal. Bison also have a clumped distribution, especially during critical periods such as calving (Calef and Van Camp 1987), which may also make predation by bears difficult. In a review of historical material, Roe (1970) found evidence of brown bears scavenging on dead bison but it appears that predation was uncommon."


Stirling, I. and AE Derocher. 1990. Factors affecting the evolution and behavioral ecology of the modern bears. International Conference on Bear Research and Management 8:189–204.


redirect.viglink.com/?format=go&jsonp=vglnk_162602933101119&key=71fe2139a887ad501313cd8cce3053c5&libId=kqzhyns00102ylrr000MLg7g1onguj7ip&loc=https%3A%2F%2Fdomainofthebears.proboards.com%2Fthread%2F686%2Fpredator-scavenger%3Fpage%3D4&v=1&out=http%3A%2F%2Fwww.bearbiology.com%2Ffileadmin%2Ftpl%2FDownloads%2FURSUS%2FVol_8%2FStirling_Derocher_8.pdf&title=Predator%20or%20Scavenger%20%7C%20Domain%20Of%20The%20Bears&txt=www.bearbiology.com%2Ffileadmin%2Ftpl%2FDownloads%2FURSUS%2FVol_8%2FStirling_Derocher_8.pdf

[oldgreengrolar]

Muskox Bull Killed by a Barren-Ground Grizzly Bear, Thelon Game Sanctuary, N.W.T.


The carcass of an adult muskox bull (Ovibos moscharus) killed by a barren-ground grizzly bear (Ursus arctos richardsoni) was found in the Thelon Game Sanctuary. It is suggested that adult muskox bulls along the Thelon River system have become prey for at least some grizzly bears that have learned to ambush them in dense vegetation.


journalhosting.ucalgary.ca/index.php/arctic/article/view/65416

[oldgreengrolar]

10 YEAR OLD BULL MOOSE WITH THE LARGEST SET OF ANTLERS, IN HIS PRIME, KILLED BY A BIG MALE GRIZZLY BEAR:




books.google.fr/books?id=Ixe6PjXpEIQC&pg=PA76&dq=One+study+animal+that+we+radioed+was+named+Whitey+

[oldgreengrolar]