Mammals diurnal

Hoary Marmot

Marmota caligata

The silver-mantled king of the alpine, the Hoary Marmot is a master of the high-altitude lifestyle. Watch for these charismatic 'whistle pigs' as they sun themselves on rocky outcrops and prepare for their long winter slumber.

0 Sightings

0 Habitats

Quick Identification

straighten

Size

Length: 62-82 cm (24-32 in); Weight: 3.7-10 kg (8.2-22 lbs), with significant weight gain before hibernation.

palette

Colors

Silvery-grey or white fur on the neck and shoulders (the 'hoary' look), transitioning to a brownish rump. Black feet and a distinctive black-and-white face pattern.

visibility

Key Features

Frosted silver-grey fur on shoulders and upper back
Black 'boots' on all four feet
White patch of fur above the nose and black mask around the eyes
Large, bushy reddish-brown tail

When You’ll See Them

schedule

Activity pattern diurnal

brightness_5

Peak hours 8-11 AM and 4-7 PM

calendar_month

Season June-August

restaurant

Diet Strictly herbivorous; they forage for alpine grasses, sedges, lichens, and succulent flowering forbs like lupine and mountain avens.

park

Habitat Alpine meadows, talus slopes, and rocky boulder fields located near or above the tree line.

bar_chart
Loading activity data...

Behavior

Hoary Marmots are highly social creatures that live in colonies consisting of a dominant male, several females, and their offspring. Known as the 'Whistle Pig,' these mammals are famous for their piercing, high-pitched alarm calls used to warn the colony of predators like golden eagles or grizzlies. They spend a significant portion of their summer days sunbathing on large 'lookout' rocks, which serve as both a heat source and a vantage point for spotting danger.

Because they live in harsh alpine environments, their active season is remarkably short. They hibernate for up to eight months of the year, usually from September to May, surviving entirely on thick layers of body fat. During their active months, they are quite playful, often seen 'wrestling' or nose-touching with colony members to reinforce social bonds. While generally wary of humans, those living near popular hiking trails can become surprisingly indifferent to quiet observers.

photo_camera EverydayEarth exclusive

Camera Tips

To capture high-quality footage of a Hoary Marmot, you must focus on 'lookout rocks.' These are the prominent, flat-topped boulders where marmots spend hours sunning themselves and monitoring the colony. Mount your camera on a nearby rock or a low tripod about 10-15 feet away. Because marmots are low-slung, keep the camera height between 12 and 24 inches to get an intimate, eye-level perspective rather than looking down on them. A slight upward angle can make the marmot look majestic against the mountain skyline.

Lighting is your biggest challenge due to their 'hoary' silver fur, which can easily blow out and lose detail in harsh midday sun. Aim for a camera position that captures the morning or late afternoon light (the 'golden hour'), which highlights the texture of their frosted coat. If your camera has adjustable exposure settings, consider underexposing by a half-stop to preserve the details in their white facial patches and silver shoulders. Since alpine winds are frequent, ensure your mount is rock-solid; any camera shake will be magnified by the lack of foreground cover.

Trigger speed is crucial because marmots can bolt into their burrows in a fraction of a second if they hear a hawk or a predator. Set your camera to a 'Burst' or 'Multi-shot' mode to capture the sequence of them standing on their hind legs to whistle. If your camera supports it, a 10-20 second video clip is often better than a photo, as it captures their vocalizations and social interactions. Avoid using artificial baits; instead, look for 'latrine' areas or well-worn paths through the heather that lead from their burrows to their foraging grounds.

Finally, consider the environment. Alpine weather is unpredictable. Use a camera with a high waterproof rating and ensure you have high-capacity, cold-resistant lithium batteries, as standard alkaline batteries will drain rapidly in the chilly mountain air. If you are setting a camera for a multi-day soak, place it on the leeward side of a rock to protect the lens from wind-blown grit and rain.

Similar Species

Species that look similar or are commonly confused with Hoary Marmot.

Yellow-bellied Marmot

Smaller with a distinct yellowish-orange belly and a white patch between the eyes, rather than the silver-grey shoulders.

Woodchuck

Usually found in lower elevations and forests; has a stockier, brownish-red appearance without the frosted silver fur.

Olympic Marmot

Found only on the Olympic Peninsula; features a more uniform drab brown or tan coat that turns yellowish in summer.

Frequently Asked Questions

Hoary Marmots are diurnal and are most active during the cooler parts of the day, typically between 8 AM and 11 AM, and again in the late afternoon from 4 PM until dusk. They often spend the hottest part of the day resting inside their cool burrows.

You shouldn't use food to attract them, as it disrupts their natural diet. Instead, place your camera near 'sentinel rocks' or high-traffic paths between rock piles and green meadows. Identifying a frequently used sunning boulder is the most effective way to guarantee a sighting.

They are herbivores that focus on nutrient-dense alpine plants. Their diet includes various mountain grasses, sedges, and flowering plants like paintbrush and lupine. They must eat a massive amount of vegetation in the summer to survive their 8-month hibernation.

No, Hoary Marmots are rarely found in suburban settings. They are specialists of high-elevation mountain environments, specifically alpine meadows and talus slopes in northwest North America.

While related, the Hoary Marmot is much larger than a Woodchuck (Groundhog) and has distinctive silver-white fur on its shoulders. Woodchucks are typically more uniform brown and lack the black 'boots' and high-contrast facial markings of the Hoary Marmot.

Record Hoary Marmot at your habitat

Connect a camera to start building your own species record — AI identifies every visitor automatically.

Join free Identify a photo