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Black Bears
A fact-based guide to black bears in Estes Park and Rocky Mountain National Park, including biology, seasonal activity, food attractants, trash storage, home protection, hiking encounters, pets, and official bear-safety guidance.
Colorado's native bears are American black bears.
Rocky Mountain National Park states that only black bears are known to exist in the park and that grizzly bears are no longer found in Colorado. Despite the name, black bears can be black, brown, cinnamon, blond, or honey-colored.
Black bears usually avoid people, but food rewards can overcome that natural wariness. Colorado Parks and Wildlife reports that most human-bear conflicts are connected to garbage, human food, pet food, bird seed, and other attractants.
Quick-reference facts from official wildlife sources.
Color, size, behavior, and activity vary by individual, habitat, food availability, sex, and season.
- Scientific Name
- Ursus americanus.
- Colorado Species
- The American black bear is Colorado's native bear species.
- Coat Color
- Black bears can be black, brown, cinnamon, blond, or honey-colored.
- Diet
- Black bears are omnivores and will eat many natural foods as well as human-related attractants.
- Climbing
- Rocky Mountain National Park notes that black bears are very capable tree climbers.
- Primary Conflict Driver
- Most conflicts are linked to accessible food, garbage, pet food, bird seed, or other attractants.
- Winter Behavior
- Black bears use winter dens. Timing varies with weather, food, age, sex, and reproductive status.
- Park Status
- Black bears are the park's only remaining bear species and are not frequently seen.
A fed bear is a bear in danger.
Preventing access to food is the most effective way to reduce conflict around homes and businesses.
Do not let a bear succeed
A single food reward can encourage a bear to return to the same property or neighborhood.
Prevention works before a sighting
Trash, grills, pet food, bird seed, compost, and coolers should be managed before bears become active.
Never approach for a photograph
Use binoculars or a long lens and allow the bear a clear escape route.
Bear activity follows food, weather, and denning cycles.
Exact timing can shift from year to year.
Emergence and renewed feeding
Bears leave winter dens and begin searching for available natural foods. Human attractants can become especially tempting when natural food is limited.
Active feeding and movement
Bears may travel widely in search of natural foods and water. Unsecured trash, pet food, grills, and bird feeders can draw them into developed areas.
Intense pre-den feeding
Bears increase food intake before winter. Attractants around homes and businesses become particularly risky during this period.
Denning
Many bears spend winter in dens, but den timing varies. A bear disturbed near a den should be given space and reported if there is an immediate safety concern.
Natural food shortages increase conflict
Colorado Parks and Wildlife notes that reduced natural food can increase human-bear conflict.
Do not leave attractants accessible
Consistent prevention is more reliable than waiting until a bear appears.
Most conflict prevention begins with attractant control.
Homes, rentals, garages, decks, and outdoor storage areas should all be reviewed for bear access.
Use wildlife-resistant practices
Follow current Estes Valley trash-storage rules and keep refuse inside an enclosed structure or approved container as required.
Seed is a powerful attractant
Bird seed can attract bears directly or draw other animals that create additional wildlife activity.
Feed indoors when possible
Do not leave pet food, bowls, or feed-storage containers accessible outdoors.
Clean and store carefully
Grease, food residue, drip pans, and nearby trash can attract bears.
Manage seasonal food sources
Ripe fruit, fallen fruit, compost, livestock feed, and unsecured garden materials can attract bears.
Secure access points
Keep garage doors closed, lock accessible doors, and avoid leaving food near open windows or screened openings.
Stay calm, do not run, and give the bear space.
Rocky Mountain National Park provides specific encounter guidance.
Do not run
Running can trigger pursuit. Stay calm and assess the bear's location and escape route.
Pick up small children
Keep the group together and prevent anyone from moving closer.
Use a firm voice
NPS guidance says to make noise, shout, or clap while remaining calm and backing away slowly.
Leave the bear an exit
Do not corner the bear or block its route.
Do not crouch or play dead
For black bear encounters, NPS advises standing tall and fighting back if an attack occurs.
Use wildlife professionals
Contact Colorado Parks and Wildlife or local law enforcement for aggressive, injured, trapped, or dangerous bears.
Pets can escalate an encounter quickly.
Control pets and avoid allowing them to chase, bark at, or approach bears.
Keep dogs controlled
A loose dog may chase a bear and then return to its owner with the bear following.
Check the yard first
Use lights and look outside before letting pets out after dark or near dawn.
Bring them inside
Outdoor bowls and spilled food can attract bears and other wildlife.
Do not rely on ordinary fences
Black bears are capable climbers and may cross many residential fences.
Supervision matters
Keep small pets close and do not leave them unattended in areas with wildlife activity.
Do not physically separate animals
Call the appropriate authority if a pet and bear encounter creates an immediate danger.
Common questions about black bears in Estes Park.
Always follow current agency and emergency guidance.
Are there grizzly bears in Estes Park?
No. Rocky Mountain National Park states that grizzly bears are no longer found in Colorado.
Can a black bear be brown?
Yes. Black bears can be black, brown, cinnamon, blond, or honey-colored.
Why do bears enter neighborhoods?
Most conflicts are linked to accessible garbage, food, pet food, bird seed, compost, grills, and other attractants.
Should I run from a black bear?
No. Stay calm, do not run, and back away slowly while leaving the bear an escape route.
Can black bears climb trees?
Yes. Rocky Mountain National Park notes that black bears are very capable climbers.
What should I do if a bear keeps returning?
Remove every attractant, document the pattern from a safe location, and contact Colorado Parks and Wildlife or local authorities if the bear becomes persistent or dangerous.
Preventing food rewards protects both people and bears.
Colorado Parks and Wildlife explains that bears that become comfortable around people can damage property or threaten safety. Habituated bears may ultimately be killed. Preventing access to human food is therefore a direct conservation action.
Larimer County's Wildlife Protection Ordinance and the Town of Estes Park's related requirements are designed to reduce wildlife access to refuse across the Estes Valley.
Explore the Wildlife Guide.
Move through the species chapters or return to the volume homepage.
References used for this chapter
Check current wildlife alerts, ordinances, and agency guidance before responding to a bear encounter.
Colorado Parks and Wildlife: Living with Bears
Official guidance on food attractants, garbage, pet food, bird seed, and preventing human-bear conflict.
View bear guidanceColorado Parks and Wildlife: Black Bear
Official species information, including coat-color variation and Colorado bear biology.
View species informationRocky Mountain National Park: Black Bears
Official information confirming that black bears are the park's only bear species and that grizzlies are no longer found in Colorado.
View park bear informationRocky Mountain National Park: Bear Encounters
Official encounter guidance, food-storage information, and black bear safety steps.
View encounter guidanceLarimer County Wildlife Protection Ordinance
Official Estes Valley refuse-storage requirements intended to reduce wildlife access to trash.
View the ordinanceLarimer County Wildlife Protection Handout
Resident and business guidance for wildlife-friendly trash management in the Estes Valley.
View the handoutColorado Parks and Wildlife: Bear Conservation
Official management context for increasing human-bear conflict and the role of natural-food shortages.
View conservation informationColorado Parks and Wildlife: Living with Wildlife
General state guidance for wildlife encounters in neighborhoods, parks, open spaces, and backyards.
View coexistence guidance