the grizzly bear
Even before sunrise, Rory is already up! A packed day ahead is waiting for her on a typical autumn day. It's a typical autumn day in a grizzly bear life: getting ready for the winter.
Rory and her family live on a mountainside in Montana, USA. Surrounded by cold pine and wet stone. A curious fact, did you notice that big hump across their shoulders?! Can you guess what that is? It's her digging engine, not fat!
And another curious fact, Rory has one of the finest noses in the world, and she can smeel what she's looking for: HUCKLEBERRIES! Grizzly bears like her can smell a berry patch from miles and miles away.
And so she goes — down the valley, past the creek, past trees she cannot see through. The reward for her hunt is waiting there, shining bright in the rising sun.
Autumn is not a lazy season for a bear like her. It's the busiest! Rory eats for nearly twenty hours today: berries by the thousand, roots hauled up with claws as long as your fingers, ants, a little of everything. That's just how a grizzly bear prepares for the next cold season — especially when you have a special secret to protect!
Deep inside her there is a tiny spark of a cub, not growing yet. Silently waiting. And it will only begin to grow if Rory eats enough this autumn to carry it through the winter. Her body is doing the arithmetic quietly, all day, every day. So every single little berry counts! Rory is about five years old now and that's usually when a mommy grizzly bear get's a cub for the very first time.
The clock has now passed midday — so what does Rory do in the afternoon? It's digging time! High on a steep hillside, where the winter snow will pile deep, Rory digs a den just big enough to curl into. She drags in branches and pats down the floor. It's not much of a house, but it's the safest place in the world.
Rory will sleep here for months, without eating or drinking. If she has done her work well, somewhere in the deep middle of winter — when the snow lies deep over the den like a thick white blanket — she will wake just enough to meet someone very small, blind, and no bigger than a loaf of bread. A little, little bear cub — and she will keep him warm until spring. Her little cub is called John!
Rory will raise him all by herself — and that's true for all bear mums, not just her. Some animals raise their babies together, mum and dad, But not bears. It's been that way for her distant family, too. Bears like Rory live all across the sea: in Europe, in Russia, in the forests of Japan. They are family she will never meet, but they share the same habits all around the globe, because they are all brown (or grizzly) bears, just like her. But how did she and her family get here, in Montana?
A looooong time ago, when the sea was frozen solid, Rory's great-great-great-grandparents walked here from the other side of the world, and made this mountainside their home.
Above the beautiful mountains the light now turns orange, and Rory eats a few more berries (always worth it)! Then she climbs the hill to her den, finding the best position, and lies down for a long long nap.
And slowly, nature starts bringing the new season, the cold Winter Rory has prepared herself to all along. The first snowflake starts falling.
Now I have a question for you! Why does Rory eat SO much, and then sleep for so long?
Here's the secret: in winter, there are no berries. No roots. Nothing to eat at all! So Rory does something amazing — she eats a whole autumn in just a few weeks, and turns every bite into fat. That fat is her fuel. It keeps her warm and alive through the long, long sleep, all the way to spring — and it keeps tiny John growing, too.
Rory doesn't just sleep through winter. She gets ready for it, one berry at a time.
WHO IS RORY: Grizzly bear (Ursus arctos horribilis) — the North American brown bear
WHERE IS RORY: Mountains and forests of western North America — Montana, Wyoming, Idaho, Alaska, western Canada
WHERE IS RORY'S FAMILY FROM: Grizzlies are brown bears — the same species lives across Europe, Russia, Japan (Hokkaido), Alaska and Canada. Their ancestors crossed from Asia when the sea was ice
RORY'S SIZE: Females ~250–350 lb; males ~400–600 lb — females are much smaller, and the fiercest defenders of cubs
RORY'S NOSE: One of the best senses of smell of any land animal — food from miles away
WHAT RORY EATS: Mostly plants — berries (huckleberries!), roots, grasses — plus salmon, insects, and occasionally meat
AUTUMN: Hyperphagia: she can forage up to 20 hours a day to build winter fat
WHEN GRIZZLY BEARS BECOME MOMS: First cubs usually around 4½–8 years old (often ~5). Then breeds again only every 3–4 years — raising cubs takes years
WHO RAISES THE CUBS: Mum, entirely alone — and this is true of all bears (brown, black, polar): fathers never help. Unlike many animals (wolves, penguins, humans) where both parents share the work
THE DEN: She digs it herself into a steep, high hillside (not under a tree — that's more a black-bear thing). Deep winter snow blankets and insulates it — so she must be dug in before the big snow
HIBERNATION: Up to 7 months — no eating, no drinking, living off her fat
THE WAITING CUB: Delayed implantation — the embryo only starts growing if she has gained enough fat. No fat, no cubs
CUBS: Born in the den in Jan/Feb — about 1 lb, blind. Usually 2. They stay with mum 2–2.5 years
ARE GRIZZLY BEARS AN ENDANGERED SPECIES? It depends where. In the lower-48 US grizzlies are Threatened (recovering — around 2,000). Worldwide, brown bears are Least Concern. Some places they're fine; some places they nearly vanished
IF YOU EVER MEET ONE Never approach and never feed a bear. Keep your distance, store food properly, make noise on trails. Bears are wild — they can't be tamed, and that's exactly why they're worth protecting
SOURCES Animal Diversity Web · IUCN Red List · U.S. Fish & Wildlife Service · National Wildlife Federation · U.S. National Park Service · Univ. of Montana Grizzly Bear Recovery · Bear Research & Management
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Facts About Grizzly Bears