Colorado’s Most Endangered Animals and the Laws That Protect Them
May 1, 2026
Colorado is home to some of the most dramatic landscapes in North America — towering Rockies, sweeping plains, ancient river canyons — and the wildlife that inhabits them is just as remarkable. But not every species sharing this terrain is thriving. Colorado’s stunning wildlife might look just fine from the view of your car or on a mountain hike, but not every animal that calls the state home is faring well in our modern world. Everything from the impacts of climate change to devastating natural causes is posing serious dangers to some of Colorado’s most beloved animal species.
Whether you’re a landowner, a hiker, a hunter, or simply a Colorado resident who cares about wildlife, understanding which animals are protected — and what the law actually requires of you — is more important than most people realize. This guide breaks down the listing process, the species you should know, the rules you must follow, and the real penalties for getting it wrong.
How Endangered Species Are Listed and Protected in Colorado
The federal Endangered Species Act (ESA) of 1973 provides for the identification, listing, and protection of both threatened and endangered species and their habitats. It remains the primary legal framework governing wildlife protection across the country, including in Colorado.
The Endangered Species Act is administered by the U.S. Fish and Wildlife Service and the Commerce Department’s National Marine Fisheries Service. It aims to protect and recover at-risk species and the habitats they rely upon. The primary goal of the act is to make species’ populations healthy and vital so they can be delisted.
The act legally protects these species through various methods, like regulations and restrictions on land use or hunting activities. Endangered wildlife are species that are likely to become extinct throughout all or a large portion of their range. Threatened wildlife are species that are likely to become endangered in the near future.
At the state level, Colorado has its own parallel system. The State of Colorado designates threatened and endangered animal species under State Statute 33-2-105. The Colorado Division of Wildlife has developed two categories of imperilment for these animal species. This means a species can be listed at the state level, the federal level, or both — each carrying its own set of legal protections.
Key Insight: A species doesn’t have to be federally listed to receive protection in Colorado. State-listed species are also legally protected under Colorado law, even if they don’t appear on the federal register.
Colorado Parks and Wildlife strives to take proactive measures to keep species populations healthy enough not to need this legal protection. Colorado Parks and Wildlife works closely with private landowners, county governments, non-governmental organizations, and others to protect and improve habitat, conduct research, and work collaboratively to promote species productivity.
Beyond listing, the federal government also designates critical habitat — geographic areas essential to a listed species’ survival. Critical habitats are vital to the survival of endangered or threatened species. The federal government partners with states and private landowners to develop and implement plans for the over 2,000 species now included on the list.
Federally Listed vs. State-Listed Endangered Animals in Colorado
One of the most important distinctions to understand is the difference between federal and state listings. They are not the same thing, and they don’t always overlap.
The Colorado Ecological Services Field Offices are responsible for the 40+ species that are federally listed as threatened or endangered, or are under review for listing, throughout the state. These species receive the full suite of protections under the ESA, including the prohibition on “taking” — which covers a broad range of harmful actions.
America’s Endangered Species Act dates back to 1973 when select animals, fish, and plants were brought under the protection of state and federal governments to help protect them and their habitats. Colorado Parks and Wildlife assists in protecting federally endangered species, and native species considered endangered in the Centennial State. In addition to endangered species, Colorado also helps protect plants and animals considered “threatened.”
| Listing Type | Governing Authority | Key Protections | Examples in Colorado |
|---|---|---|---|
| Federally Endangered | U.S. Fish & Wildlife Service | Full ESA protections; take prohibition; critical habitat designation | Black-footed ferret, bonytail chub, whooping crane |
| Federally Threatened | U.S. Fish & Wildlife Service | ESA protections; some flexibility in regulations | Canada lynx, lesser prairie chicken |
| State Endangered | Colorado Parks & Wildlife | State statute protections; Colorado-specific regulations | Kit fox, gray wolf |
| State Special Concern | Colorado Division of Wildlife | Monitoring and conservation priority; no full take prohibition | Texas blind snake, Couch’s spadefoot |
The BLM manages an array of diverse habitats on nearly 8.4 million acres of public land in Colorado, including habitat for over 150 special status species. Special status species include plants and wildlife that are protected as threatened or endangered under the Endangered Species Act or are designated by the BLM as sensitive species.
You should also be aware that species can move between listing categories over time. Successful conservation efforts can lead to delisting, while population declines can trigger emergency listings. By gathering quantitative data on the range and distribution of species and their current condition, BLM–Colorado has helped recover several species so they can be removed from the Federal List of Threatened and Endangered Species. Over the past several years, BLM-led initiatives have contributed to Colorado hookless cactus, North Park Phacelia, Brandegee’s buckwheat, and skiff milkvetch being either recommended for delisting or found to be not-warranted for listing.
Pro Tip: Always check the USFWS ECOS species database for the most current listing status of any Colorado species before undertaking land-use activities that could affect wildlife habitat.
Notable Endangered Animals Found in Colorado
Colorado’s endangered wildlife spans mammals, birds, fish, amphibians, and reptiles. Some of these species are iconic; others are rarely seen. All of them face serious threats to their survival.
Black-Footed Ferret
The black-footed ferret is the most endangered mammal in Colorado because of a combination of disease and a drop in the population of prairie dogs. The ferrets rely on these rodents for both shelter and as a source of food. Once believed extinct in the wild, captive breeding programs have helped slowly rebuild populations in select reintroduction sites across the state. You can learn more about animals that have faced extinction and the recovery efforts that have made a difference.
Whooping Crane
Named after the “whoop” sound it produces, the whooping crane is the tallest bird in North America and is one of only two crane species found on the continent. These fascinating birds can reach up to over five feet in height and boast striking red marks on their heads. Their calls are extremely loud and can travel distances longer than a mile. Loss of habitat and overhunting decimated the whooping crane’s population so severely that a 1940 hurricane wiped out half the birds living in Louisiana and left the survivors unable to mate and reproduce. Whooping cranes are extremely rare in Colorado, and in 1998, conservationists were devastated to discover that one of only five remaining birds perished by flying into power lines in the San Luis Valley.
Kit Fox
Also found in western Colorado, these small rabbit-sized foxes occupy shrublands and arid, semi-desert environments. They can also be found around the southwestern United States and even into Mexico. The foxes live in small, underground communities where dens are connected by multiple passageways to easily emerge for nightly hunting. They’ve become endangered in Colorado from a combination of agriculture and human development taking up more and more of their habitat. They’ve also been consistently hunted. Because of these factors, the kit fox has been officially protected since 1994.
Bonytail Chub
Bonytail is a fish that was once plentiful in Colorado but is so endangered today that it stands among America’s rarest and most imperiled fish species. Experts currently aren’t aware of any bonytail populations that breed in the wild, and even with strict conservation efforts, this fish might still go extinct soon. The J.W. Mumma Native Aquatic Species Restoration Facility near Alamosa currently raises 12 species of threatened and endangered fish, including the federally endangered bonytail chub.
Canada Lynx
The lynx was listed in Colorado as endangered in 1973 and as a federally listed threatened species in 2000. In an effort to re-establish lynx in Colorado, the CDOW released 166 lynx from 1999 to 2004 into suitable habitat areas of the San Juan Mountains in southwestern Colorado. The lynx is one of the more visible success stories in Colorado’s reintroduction history, though it remains a federally threatened species today.
Lesser Prairie Chicken
Currently considered a “Vulnerable” species by the International Union for Conservation of Nature, experts point to global warming as devastating the fragile sagebrush ecosystems that lesser prairie chickens rely on. These beautiful birds are marked with striking bright orange tufts of fur placed over their eyes like eyebrows. Their range spans eight states, but this range has shrunk over the years and significantly so in western Colorado.
Important Note: Colorado is also actively pursuing the reintroduction of the gray wolf. The gray wolf is listed as an endangered species on the commission’s list of endangered or threatened species, and once restored to Colorado, gray wolves will help restore a critical balance in nature.
If you’re interested in how Colorado’s wildlife compares to other states, see our guides on endangered animals in Washington and endangered animals in Virginia. You might also want to review dangerous animals in Colorado to understand which species require extra caution in the field.
What You Cannot Do Around Endangered Animals in Colorado
Federal and state law place strict limits on how you can interact with — or even exist near — a listed species. The legal definition of prohibited conduct is broader than most people expect.
The Endangered Species Act makes the taking of an animal on the endangered or threatened species list illegal. According to the act, to “take” is to “harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect or attempt to engage in any such conduct.” This definition is intentionally expansive, and it applies whether you intended to harm the animal or not.
In addition to taking a species, delivering, receiving, selling, purchasing, or transporting a threatened or endangered animal species is prohibited without a permit, whether the species is alive or dead. Permits are also required for individual or group activities that involve interfering with a species’ habitat.
- Hunting or trapping any listed species, even on your own property
- Harassing wildlife, which includes chasing, disturbing, or disrupting normal behavioral patterns
- Destroying habitat in ways that significantly impair essential behaviors like breeding, feeding, or sheltering
- Buying, selling, or transporting a protected species, alive or dead, without a federal permit
- Collecting specimens, including feathers, bones, eggs, or nests of protected bird species
- Feeding endangered animals in ways that alter their natural behavior or create dependency on humans
Common Mistake: Many people assume that simply observing an endangered animal from a close distance is harmless. In practice, repeatedly approaching nesting sites, flushing birds from nests, or otherwise altering an animal’s natural behavior can legally constitute “harassment” under the ESA — even if no physical contact occurs.
Individuals engaging in activities that might result in the taking of a protected species must abide by a Habitat Conservation Plan (HCP), which includes information on how to mitigate or minimize any impacts to the species or its habitat. This applies to developers, agricultural operators, and even private homeowners undertaking construction near designated critical habitat.
For context on how Colorado’s wildlife rules compare to a neighboring state, see our overview of endangered animals in West Virginia.
Endangered Species on Private Land in Colorado
One of the most common misconceptions about endangered species law is that it only applies on public land. That is not the case. The prohibition against “taking” an endangered species applies to actions occurring on private land as well as state or federal public land, and financial penalties apply for violating the prohibition.
The ESA has the potential to restrict substantially agricultural activities because many of the protections provided for threatened and endangered species under the Act extend to individual members of the species when they are on private land. Approximately 90 percent of endangered species have some habitat on private land, with almost 70 percent of the endangered or threatened species having over 60 percent of their total habitat on nonfederal lands.
If you’re a landowner whose property overlaps with critical habitat, you have both rights and responsibilities. The law provides several mechanisms to help you navigate this:
Incidental Take Permits (ITPs)
Private landowners who plan to modify their land can apply for an incidental take permit, which authorizes the incidental taking of a listed species even if a member of the species is potentially harmed. Before a permit is granted, property owners must submit a habitat conservation plan, which must contain information on the relevant and predicted effects of the individual’s taking of a listed species, how the effects will be minimized and/or mitigated, and how the plan will be financed. Individuals must document that they have considered all possible protective actions for the listed species before finalizing a habitat conservation plan.
Candidate Conservation Agreements
Candidate Conservation Agreements are made by the Fish and Wildlife Service with non-federal property owners to provide incentives for conserving candidate species so that they are not listed as endangered or threatened. These voluntary agreements can benefit landowners by reducing future regulatory exposure.
“No Surprises” Assurances
The U.S. Fish and Wildlife Service attempts to assure property owners that they will not face additional land restrictions beyond those outlined in their Habitat Conservation Plans. This provision offers a degree of regulatory certainty for landowners who voluntarily engage in conservation planning.
Important Note: Under the Endangered Species Act, the protection of an individual’s property from a listed species is not considered a permissible defense against potential federal penalties. For example, an individual cannot kill a listed animal to prevent damage to a house, a building, or other piece of property unless the individual was also protecting himself or herself from bodily harm.
Colorado Parks and Wildlife works closely with private landowners, county governments, non-governmental organizations, and others to protect and improve habitat, conduct research, and work collaboratively to promote species productivity. If you’re unsure how listed species affect your property, reaching out to CPW directly is a smart first step. You may also find it useful to review our guide on farm animals and how domestic livestock intersects with wildlife regulations in rural settings.
How to Report an Endangered Animal Sighting in Colorado
If you spot an endangered or threatened animal in Colorado, reporting that sighting can make a genuine difference. Wildlife managers rely heavily on public observation data to track population trends, monitor recovery progress, and identify new habitat use.
If you observe wildlife, including wolves or wolf activity, this information could be incredibly valuable to CPW. Wildlife observations by members of the public, and private landowners in particular, can help inform wildlife management in Colorado.
The primary reporting channel is Colorado Parks and Wildlife. You can submit wildlife sightings directly through the CPW wildlife sighting portal, which routes your report to the appropriate wildlife managers based on the species and location involved.
Many people hesitate to report sightings because they worry about privacy or fear that reporting will invite unwanted attention to their property. Colorado law addresses this directly:
You may be concerned that reporting wildlife activity will compromise your privacy, or may make species location information widely available, but there are laws in place to protect your privacy and to protect species location information from public disclosure if you choose to share this information with CPW. While the Colorado Open Records Act (CORA) makes many government records public, there are exceptions to CORA that protect your personal information, information about private property, and animal location data.
CPW must deny any CORA request for records “based on information related to private lands [that] identify or allow to be identified any specific Colorado landowners or lands.” This means that if you report wildlife activity on private land, CPW is required to deny any CORA request for that information.
Here’s what to include when making a wildlife sighting report:
- Species identification — describe the animal as specifically as you can, including size, coloring, and any distinguishing features
- Location — GPS coordinates or the most precise description of the location you can provide
- Date and time — when exactly you observed the animal
- Number of animals — whether you saw one individual or a group
- Behavior observed — what the animal was doing (feeding, resting, moving, with young, etc.)
- Photos or video — if you captured any documentation, include it with your report
Pro Tip: CPW can withhold information that could be used to determine the specific location of an animal or group of animals. This means that CPW can withhold information about the location of wildlife activity, even on public land, in response to a CORA request. Don’t let privacy concerns stop you from reporting — the law is on your side.
For species-specific reporting, you can also contact the U.S. Fish and Wildlife Service’s Colorado Ecological Services Field Office directly, particularly for federally listed species or suspected violations. The Bureau of Land Management’s Colorado office is also a useful resource if the sighting occurred on BLM-managed public land.
Penalties for Harming or Taking an Endangered Animal in Colorado
The penalties for violating endangered species protections in Colorado are serious — and they operate at both the federal and state levels. You can face consequences from both simultaneously for a single incident.
Federal Penalties Under the ESA
Under the Endangered Species Act, individuals who knowingly take a listed species can be fined up to $25,000 for each violation or instance. Individuals who otherwise unknowingly take a species can be fined up to $500 for each violation or instance. Federal criminal penalties can also include imprisonment for serious or repeat violations.
State Penalties Under Colorado Law
A person who violates Colorado’s wildlife statutes is guilty of a misdemeanor and, depending upon the wildlife involved, shall be punished upon conviction by a fine of not less than two thousand dollars and not more than one hundred thousand dollars, or by imprisonment for not more than one year in the county jail, or by both such fine and such imprisonment.
Colorado law also establishes minimum restitution values for unlawfully taken wildlife. The following shall be considered the minimum value of the wildlife unlawfully taken or possessed: for each eagle, member of an endangered species, Rocky Mountain goat, moose, Rocky Mountain bighorn sheep, or lynx — $1,000; for each elk or member of a threatened species — $700; for each pronghorn, deer, black bear, or mountain lion — $500. These restitution amounts are assessed on top of any fines or criminal penalties.
| Violation Type | Governing Law | Penalty Range |
|---|---|---|
| Knowingly taking a listed species | Federal ESA | Up to $25,000 per violation |
| Unknowingly taking a listed species | Federal ESA | Up to $500 per violation |
| Taking an endangered/threatened species | Colorado State Law | $2,000–$100,000 fine + up to 1 year imprisonment |
| Restitution — endangered species | Colorado State Law | Minimum $1,000 per animal |
| Restitution — threatened species | Colorado State Law | Minimum $700 per animal |
Beyond fines and imprisonment, violations can also result in the revocation of hunting and fishing licenses — a significant consequence for anyone who regularly recreates in Colorado’s outdoors. An incidental take permit is required if an activity may result in the taking of a threatened or endangered species. Those who apply for this permit must submit a habitat conservation plan to the proper federal or state authority ensuring that the effects of taking the species will be minimized and mitigated. Pursuing permits proactively is far less costly than facing enforcement action after the fact.
Common Mistake: Some people assume that accidentally harming a protected animal — say, striking one with a vehicle — carries no legal consequence. While unintentional incidents are treated differently than deliberate violations, you should still report the incident to CPW immediately. Failing to report can complicate your legal standing significantly.
Understanding Colorado’s endangered species laws isn’t just about avoiding penalties — it’s about recognizing the role each of us plays in keeping the state’s wildlife viable for future generations. Whether you’re hiking through black-footed ferret habitat, farming land near a critical waterway, or simply curious about the animals sharing your landscape, knowing the rules helps you act responsibly and protect what makes Colorado’s natural environment extraordinary. For more on the broader world of at-risk wildlife, explore our coverage of endangered animals in Washington, West Virginia, and Virginia — or take a closer look at dangerous animals in Colorado Springs for a regional perspective on wildlife encounters closer to home.