Sounds Of 13 OWLS In Colorado (Guide With Photos & Calls)
Did you recently hear an owl sound in Colorado, and want to know what species it was?
Identifying owl calls in the Centennial State is not as easy as it might seem, since there are many owls that regularly occur in Colorado.
To help you identify the owl you heard, we’ll cover the most common owl sounds of Colorado in this article.
What sounds do Colorado owls make?
Below we’ve uploaded the sounds of the 13 types of owls found in Colorado:
- Great Horned Owl
- Barn Owl
- Long-eared Owl
- Burrowing Owl
- Short-eared Owl
- Western Screech-Owl
- Northern Saw-whet Owl
- Flammulated Owl
- Eastern Screech-Owl
- Spotted Owl
- Northern Pygmy Owl
- Snowy Owl
- Boreal Owl
By learning to recognize their call, you can identify these owls even if it’s hard to see them in the dark of night. This is extremely helpful if you want to identify Colorado owls.
And while most of these owls are regular birds in Colorado, the last three species on the list are vagrants that only rarely occur in the state.
Now let’s dive in and listen to the calls and sounds of these owls:
Great Horned Owl
Scientific name: Bubo virginianus
Great Horned Owl sounds:
(Recording source: Christopher McPherson, XC691461, www.xeno-canto.org/691461)
The sound recording above is of the territorial song of a Great Horned Owl, which can be heard from both males and females.
With a wingspan up to 4 feet, the Great Horned Owl is the largest owl species breeding in Colorado.
This larbe owl has two ear tufts (also called horns) and big yellow eyes. In Colorado, this owl starts its nesting very early in the year, laying its eggs in January or February.
This owl is almost entirely nocturnal, and can hunt in complete darkness by relying on its keen sense of hearing.
The Great Horned Owl doesn’t build its own nest, but instead occupies the nests of other large birds, such as Colorado herons or raptors.
It is found year-round throughout Colorado, and can be encountered in a wide variety of habitats in Colorado, from woodlands to urban areas.
This big Colorado bird is a fierce hunter, catching birds up to the size of ducks, and mammals up to the size of squirrels, rabbits, and even young foxes.
Barn Owl
Scientific name: Tyto alba
Barn Owl sounds:
(Recording source: Jayrson De Oliveira, XC619814, www.xeno-canto.org/619814)
The sound recording above is of the territorial song of an American Barn Owl. It is a screeching sound that is hard to miss.
Somewhat softer and less intense-looking than the Great Horned Owl, Barn Owls are characterized by their white coat of feathers, and their “friendlier” appearance.
Armed with exceptional night vision, Barn Owls are strictly nocturnal raptors and therefore hard to spot. However, they can be readily identified by their characteristic screeching calls.
And if you do spot one flying overhead by the light of the moon, you may be able to see the bright glow of these white Colorado birds.
These owls are present in Colorado all year round, and favor open areas and farmland as their hunting grounds.
Long-eared Owl
Scientific name: Asio otus
Long-eared Owl call:
(Recording source: Baltasar Pinheiro, XC737794, www.xeno-canto.org/737794)
The sound recording above is of the territorial song of a Long-eared Owl.
These well-camouflaged, elusive owls are smaller than the aforementioned species, and are year-round residents and breeding birds throughout Colorado.
They use their favored habitat of dense wooded areas to prey on the small rodents, small birds and other animals that call the nearby grasslands their home.
Similar to other owl species, Long-eared Owls can fly completely silently due to fringes on their flight feathers.
Together with their keen sense of hearing, this enables these owls to catch prey by surprising it in the dark of the night.
But despite their best efforts to remain hidden, these owls can be identified by their long, low hoots.
Another great characteristic for identifying these owls is by their elongated tufts of feathers on the ears, and their droppings found underneath conifer trees close to grassy areas.
Burrowing Owl
Scientific name: Athene cunicularia
Burrowing Owl sound:
(Recording source: David Ricardo Rodriquez-Villamil, XC524489, www.xeno-canto.org/524489)
The sound recording above is of the territorial song of a Burrowing Owl.
The Burrowing Owl is a regular resident of open areas in Colorado, including the great plains. It digs its own burrows, but also often takes over burrows from prairie dogs or ground squirrels.
This owl is active both day and night, and hunts insects and small rodents in open areas.
Due to their small size, these owls can be hard to spot in the expanse of open prairies.
They are most often observed perching on a small mound, from where they can scan their surroundings in search of food.
Short-eared Owl
Scientific name: Asio flammeus
Short-eared Owl call:
(Recording source: Lars Edenius, XC718743, www.xeno-canto.org/718743)
The sound recording above is of the territorial song of a Short-eared Owl.
The Short-eared Owl is a highly migratory owl species, and while it doesn’t breed in Colorado, it is regularly observed in the state outside of the breeding season.
Short-eared Owls are more often observed hunting in daylight than other owls species.
Together with their hunting tactic of flying low over the ground in open areas, this makes these owls relatively easy to spot.
You can encounter these owls in Colorado in any kind of open landscapes, including farmland, airports, and fallow land.
Western Screech-Owl
Scientific name: Megascops kennicottii
Western Screech Owl sound:
(Recording source: Lance A. M. Benner, XC540561, www.xeno-canto.org/540561)
The sound recording above is of the territorial song of an Eastern Screech-Owl. These owls are common birds in Colorado and can be seen in the state all year round.
Originally birds of open woodlands, Western Screech-Owls have adapted very well to urban habitats, and are regularly found in parks, large gardens, and golf courses.
They breed in tree cavities, and are best identified by their characteristic series of accelerating hoots.
They have a very varied diet, which includes any type of small animal ranging from worms to insects and rodents.
Western Screech-Owls readily accept artificial nesting cavities, which means you can attract them to your backyard by setting up nest boxes.
Northern Saw-whet Owl
Scientific name: Aegolius acadicus
Northern Saw-whet Owl call:
(Recording source: Lance A. M. Benner, XC546885, www.xeno-canto.org/546885)
The sound recording above is of the territorial song of a Northern Saw-whet Owl.
This is another small owl species that’s hardly larger than a pint. These owls are hard to see, but they are easy to detect if you listen for their characteristic too-too-too call at night.
Northern Saw-whet Owls are regular breeding birds in northern Colorado, and also show up in more southern parts of the state during winter.
In some years these birds erupt southwards during winter, and can be seen far south of their normal range.
They nest in tree cavities, but also readily accept man made nest boxes. So if you have a large garden with mature trees, it’s worth putting up a nest box well before the nesting season.
Flammulated Owl
Scientific name: Psiloscops flammeolus
Flammulated Owl call:
The sound recording above is of the territorial song of a Flammulated Owl.
The Flammulated Owl is a breeding bird in central Colorado, and also occurs in a few scattered populations in northern and southeastern parts of the state.
These small owls are summer visitors in the Centennial State, and migrate south in October to their wintering grounds in south Mexico.
In addition to its small size, it also has the habit of foraging for insects in the crowns of tall conifer trees, which makes it hard to observe.
The best way to identify one of these owls is by their low hooting call. They feed almost exclusively on insects.
Eastern Screech Owl
Scientific name: Megascops asio
Eastern Screech-Owl sound:
(Recording source: Wisconagus, XC690687, www.xeno-canto.org/690687)
The sound recording above is of the territorial song of an Eastern Screech-Owl.
Eastern Screech owls are only found in the easternmost parts of Colorado, where they are year-round residents.
Originally birds of open woodlands, Eastern Screech-Owls have adapted very well to urban habitats, and are regularly found in parks, large gardens, and golf courses.
They breed in tree cavities, and are best identified by their characteristic series of accelerating hoots.
They have a very varied diet, which includes any type of small animal ranging from worms to insects, rodents, and reptiles.
Eastern Screech Owls readily accept artificial nesting cavities, which means you can attract them to your backyard by setting up nest boxes.
Spotted Owl
Scientific name: Strix occidentalis
These owls have become increasingly rare, since their preferred habitat is mature forest, which has been steadily declining across its range in North America.
Colorado is home to the Mexican Spotted Owl (Strix occidentalis lucida), which is one of three subspecies of the Spotted Owl in North America.
This owl has a very patchy distribution in the Centennial State, which makes it difficult to find. Similar to other owl species, the best way to identify these owls is by their hooting calls.
Like other owls, it feeds on small mammals, but likes to specialize on flying squirrels and woodrats.
Northern Pygmy Owl
Scientific name: Glaucidium californicum
Northern Saw-whet Owl call:
The sound recording above is of the territorial song of a Northern Pygmy Owl.
The Northern Pygmy Owl is the smallest owl found in Colorado. But while it may be tiny, it is an aggressive hunter that regularly catches songbirds as large as itself.
This owl likes to hunt during the day. It perches in a hidden spot, and dashes out if a songbird should venture close to it.
When songbirds spot a Pygmy Owl, they will gang up on and mob the owl until it gives up and flies away.
Since Northern Pygmy Owls are usually hard to spot, the best way to find them is by paying attention to mobbing songbirds, and use them as your guide.
Snowy Owl
Scientific name: Bubo scandiacus
Snowy Owl call:
(Recording source: Tero Linjama, XC343144, www.xeno-canto.org/343144)
The sound recording above is of the territorial song of a Snowy Owl.
The Snowy Owl is the largest owl species in North America, and weighs more than the Great Horned Owl.
Snowy Owls are rare winter visitors in Colorado, where they can be seen in wide open areas, such as fields and grassland.
These owls breed in the high arctic well north of the arctic circle, where they hunt ptarmigans and lemmings.
Snowy Owls are easily recognizable by their large size, rounded head white coloration with varying amounts of black markings.
These big birds favor open ground, and can often be observed perching on the ground. In cultivated landscapes they also perch on hay bales, fence posts and telephone poles.
Snowy Owls follow the population changes of small rodents, and are most common in winters with high rodent populations.
Boreal Owl
Scientific name: Aegolius funereus
Boreal Owl call:
(Recording source: Lars Edenius, XC756355, www.xeno-canto.org/756355)
The sound recording above is of the territorial song of a Boreal Owl.
The Boreal Owl is a northern species that has the southernmost edge of its range in Colorado, where it is a year-round resident in mountainous habitats.
These owls frequent conifer forests and only sing early in spring from February through April.
And while they are hard to spot during daytime, sometimes mobbing songbirds will give their location away.
Conclusion
And there we have the most common owl sounds that can be heard in Colorado!
I think you’ll find that, with a little practice, identifying owls by their sounds is much easier than identifying them by sight.
Of course this doesn’t apply when owls are silent, which can be the case with winter visitors such as Short-eared Owls.
If you enjoyed this article, check out our guide to the Colorado birds of prey.
