Bears and Food

North American Black Bears are omnivores, which means they eat a little bit of everything. The majority of their diet consists of grasses, fruits, and nuts, but they also get protein from insects, small mammals, and the carcasses of dead animals.

Bear scratching back

Even one taste of human food can cause a bear to change its behavior, and potentially become aggressive towards humans. Let’s take a look at the ways you can keep your food secure and bears safe at Lassen Volcanic National Park.

Camp sites in established campgrounds have food lockers. Put all of your food and scented items, like toiletries and bug repellent, in there when not in use. That way if a bear comes around, it won’t get a taste. Here at Lassen Volcanic, bears don’t associate vehicles with food, and we want to keep it that way.

So storing food and scented items in a hard-sided vehicle with the windows rolled up is appropriate. Make sure to keep ice chests and other food containers as hidden as possible. The trunk is a good place.

If you plan on heading into the backcountry for an overnight backpacking adventure in the wilderness, you must carry with you an approved bear-resistant food container, like a bear canister, to put all of your food and scented items in.

You can rent a bear canister from the Lassen Association at the Loomis Museum or the Kohm Yah-mah-nee Visitor Center Place the container on the ground at least 100 feet away from your tent.

If a bear does find it, it might bat it around, but it won’t get the smelly stuff inside.

And be sure not to leave your pack unattended at any time.

Do your part to keep Lassen’s bears safe, healthy, and wild, by properly storing your food and scented items when you come to enjoy your park.


Polar Bear Research at San Diego Zoo

The USGS conducts research on polar bears and has documented declines in their population. Survival rates and body size.

To better understand how sea ice decline in the Arctic affects polar bears, USGS scientists are using accelerometers to gather data about the energy needed for the bears to hunt for food.

The scientists use accelerometers to track the polar bear movements like a Wii-fit video game controller tracks yours.

Since the accelerometer data are cryptic, USGS scientists are using captive bears in zoos to understand what the data mean. Researchers did Geological Survey at the San Diego Zoo collecting accelerometer data from their adult female polar bear Tatiq.

And so the keepers here at the San Diego Zoo have been training Tatiq to wear a collar for the last four months and slowly getting her acclimated to the collar. And so now she’s able to wear the collar for about three hours a day without any issues. She’s totally comfortable wearing the collar and she doesn’t seem phased at all wearing it. And so researchers did videotaping her while she’s wearing this accelerometer collar to calibrate the accelerometer data.

Basically trying to understand what the accelerometer data looks like for different behaviors. So when Tatiq’s walking, what the accelerometer data looks like compared to when she’s swimming versus resting versus eating, with the intent of actually applying that information to accelerometer data we’recollecting from wild bears.

Researchers attached accelerometers to their GPS collars that they were deploying on wild polar bears in the Arctic. So this study should help them get a better understanding of how polar bears are responding to declines in sea ice and what the actual implications are for survival, body condition and then start to look at how future forecasts for declines might impact polar bears in the future.