Why a US national park is holding a ‘Fat Bear Week’ contest

Large bear sitting by side of river
Image caption The voluptuous bear, named Beadnose, is already a favourite for the prize

We have all gained a little extra weight from time to time, but for brown bears, piling on the extra pounds means the difference between life and death.

They can hibernate for six months of the year – meaning they have to gorge from July to September in order get through Winter and into the Spring mating season.

Katmai National Park – a sprawling eight million acre reserve in Alaska – is poking fun at the process by again hosting their annual “Fat Bear Week”.

The week-long event, which encourages fans to vote on social media for their favourite animals,pits gorged bears against each other in heats, until one ultimately will take the 2018 crown for their stocky stature.

The competition started in 2014 and has grown in popularity since.

The new-found attention online is a strange phenomenon for park staff to understand – but they’re embracing it, eagerly announcing the start of “jiggly season” earlier this week.

“Fat bear week started as a way to engage the public with our bears, if people are interested in the bears, they tend to want to help protect them,” Ranger Russ Taylor says.

Bear 747 stands in river, with large stomach protruding
Image caption Bear 747 showing off their impressive gut during a river hunting session

The park is home to the Brooks River – a major salmon run which provides an abundance of food for some of the park’s estimated 2,200 bears.

Ranger Taylor explains that like us, bears usually have a “switch” that tells them to stop eating when they’re full. But that gets turned off in Autumn during a phase known as hyperphagia where they feel the need to eat continuously.

For adult males this can mean packing on an eye-watering 400-500lb (180-225kg) in a couple of months by indulging in hundreds of pounds of fatty salmon.

By the time hibernation starts, some will top the scales at well over 1000lb-1200lb (450-550kg), in preparation of losing up to a third of their bodyweight as temperatures drop to up to -37C (-35F) in the park.

It’s not just Fat Bear Week that gives the Katmai bears their celebrity – some also star on an online webcam stream that has amassed thousands of fans in countries all around the world.

“People who have never been to the park and may never get to the park can watch the webcams so quasi-religiously that they get to know the bears really really well,” Ranger Taylor says.

Rangers and keen-eyed viewers notice get to know the individual bears by personality, appearance and even their habits.

“You begin to notice how wide their ears are apart, what kind of snout do they have… some like to dive for salmon, some like to wait for the salmon to come to them.”

So what makes a Fat Bear Week champion? Sheer bulk can help bears become a fan favourite, but the before and after shots posted by park staff helps showcase the most impressive gains too.

A bear hunts with a salmon in its mouth
Image caption The bears in the park can pack dozens of the 4,000 calorie fish away a day at their peak

A few days in, fans this year are already getting really into it – but they also get defensive with their favoured bears.


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