I don’t know for sure what subspecies of brown bear they are.
Here’s what the National Wildlife Foundation has to say about grizzlies and Kodiaks.
According to this Smithsonian video, they might be Kodiak bears: the really BIG kind!
https://youtu.be/Tluaarbb0bE&rel=0
Actual comment: “I don’t know about the Kodiak bears but we watched Alaskan Brown Bear 480 Otis eat 42 salmon in one day a few years ago on the explore webcams of Katmai Brooks Falls. I think this year his top number was 36. His average for a season ends up being around 14 per day. There are a few people who keep daily totals on days he’s on camera and he’s on camera most days for at least a little while.”
Go, Otis!
As for Ursus arctos horribilis (grizzlies), well, I found this interesting documentary on them in Yellowstone (along with wolves and coyotes):
https://youtu.be/AuHoaMBPlas&rel=0
Ready for a little lagniappe?
https://youtu.be/ad3Em2r7YMM&rel=0
Featured image: Ludmila Ruzickova/Shutterstock
Flight To Wonder 