Are There Black Crowned Night Herons in Colorado?
Black Crowned Night Herons are rare but regular visitors to Colorado, appearing primarily during migration seasons. These nocturnal waders are adapted to lowland wetlands and marshes, which are scarce at Colorado's high elevations. The South Platte River, Colorado River, and associated reservoirs provide the few suitable habitats.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 21, 2026.
Black-crowned Night Heron · Bob Walker CC BY
Black-crowned Night Heron · Jared Lincenberg CC BY
Black-crowned Night Heron · Public domain CC0
- 41,691
- GBIF records
- 6
- birding hotspots
Yes, black crowned night herons are in Colorado. Next you'll want:
Black Crowned Night Herons are rare but regular visitors to Colorado, appearing primarily during migration seasons. These nocturnal waders are adapted to lowland wetlands and marshes, which are scarce at Colorado's high elevations. The South Platte River, Colorado River, and associated reservoirs provide the few suitable habitats.
Where They Are Found in Colorado
Black Crowned Night Herons in Colorado are restricted to lowland river valleys and reservoir systems. The South Platte River corridor, particularly in the Denver metropolitan area and eastward toward Nebraska, offers the most consistent habitat. The North Platte River system in northern Colorado provides occasional sightings during migration. The Colorado River bottom in western Colorado, especially near Palisade and Rifle, may host migrating birds. Large reservoirs including Lake John Martin, Marais des Cygnes, and various other water bodies serve as stopover sites. The Yampa River in northwestern Colorado provides riparian habitat. Unlike lower elevation states, Colorado's high mountains and plateaus offer minimal suitable wetland habitat. Most Colorado sightings occur at elevations below 5,000 feet along major river systems. ExploreColorado's wildlifeto learn about other water-adapted species. Seethe Black Crowned Night Heron guide for Coloradofor more.
Season and Timing in Colorado
Black Crowned Night Herons visit Colorado strictly during migration periods, with spring and fall movements being the primary times to encounter them. Spring migration runs from April through May as northbound birds move toward breeding grounds in the northern Great Plains and Interior West. Fall migration occurs from July through September as southbound birds retreat toward wintering areas. Occasionally, a bird may linger into early June if local conditions remain favorable. Winter presence is virtually impossible, as Colorado's cold temperatures freeze water surfaces and eliminate feeding opportunities from November through March. Summer residents are extremely rare, as Colorado's elevation and climate fall outside the species normal breeding range. Any bird present would be a transient migrant, not a permanent resident. Seethe Colorado wildlife guidefor more.
How to Identify a Black Crowned Night Heron
Adult Black Crowned Night Herons are stocky, medium-sized herons standing approximately 23 to 26 inches tall. They display a striking black crown and black back, white or pale gray underparts, and distinctive red or reddish-orange eyes. The heavy black bill is relatively short for a heron, and their legs are yellow to orange-yellow. Immature birds appear quite different, showing brownish-gray plumage with heavy streaking and lacking the black crown and white belly of adults. They have greenish-yellow eyes rather than the red of adults. Their compact, thick-necked body shape and heavy bill distinguish them from more slender heron species. In Colorado's varied lighting, the contrasting black and white of adults makes them relatively straightforward to identify.
Sighting Locations in Colorado
Your best chances of observing Black Crowned Night Herons in Colorado concentrate at specific lowland wetland sites. The South Platte River from Denver eastward to the Kansas border, particularly where it widens into deeper pools and adjacent marshes, offers consistent habitat. Rocky Mountain Arsenal National Wildlife Refuge near Denver occasionally hosts migrating birds. Barr Lake State Park has recorded sightings during migration periods. The Colorado River corridor in western Colorado, particularly near palisade and Rifle, may attract birds during spring and fall movement. Large reservoirs like Lake John Martin in southeastern Colorado serve as stopover sites. State wildlife areas along major river corridors provide additional possibilities. VisitColorado's wildlife hubfor detailed location and access information.
Typical Behavior and Feeding Habits
Black Crowned Night Herons are strictly nocturnal hunters that spend their entire days hidden in dense vegetation, under bridges, or in riverside trees. They become active exclusively at dusk and remain active throughout the night. These birds hunt by standing motionless in shallow water, using their excellent low-light vision to detect small prey items. Their diet consists primarily of small fish, crayfish, frogs, and aquatic insects. Colorado birds would feed similarly to those in other regions, though food abundance may be limited. They are colonial nesters in optimal habitat, building stick nests in trees or shrubs near water. Young birds remain dependent on parents for several weeks after leaving the nest. These herons often hunt in loose associations with other wader species.
Coexistence and Safety Notes
Black Crowned Night Herons are protected under the Migratory Bird Treaty Act, making it illegal to harm, capture, or collect them. These birds are shy and non-aggressive, preferring to avoid human contact. They pose no threat to people or domestic animals and will typically flee if approached. In urban and suburban areas, they may occasionally roost under bridges or in park trees. Do not attempt to approach or photograph at close range, as this causes unnecessary stress. If you encounter a roosting bird during dawn or dusk, maintain distance and observe quietly. These birds play important ecological roles as predators of small aquatic organisms.
Similar Species Found in Colorado
Several wading bird species occur in Colorado and might be mistaken for Black Crowned Night Herons. Great Blue Herons are much larger, standing over four feet tall with blue-gray plumage. Green Herons are smaller and more solitary with greenish coloration. Tricolored Herons have a more slender build and distinctive chestnut and white markings. Yellow-crowned Night Herons would be even rarer than Black-crowned but share similar size. Least Bitterns are much smaller and secretive. Black-crowned adults are identified by their stocky build, black crown and back, white underparts, and bright red eyes. Immature Black-crowned birds are darker than Yellow-crowned immatures with heavier overall streaking patterns.
Frequently Asked Questions
When is the best time to see Black Crowned Night Herons in Colorado? Spring migration from April through May and fall migration from August through September offer the highest probability. Where should I look for them? Focus on lowland river valleys, particularly the South Platte River corridor and major reservoir systems. Can they survive Colorado winters? No, they cannot survive freezing water and harsh winter conditions. What calls do they make? They produce harsh quock or wok sounds, usually heard at dusk or night. Where else are they found? To learn about populations in more favorable habitats, visitour national wildlife guidefor other regions.
Plan your black crowned night heron sighting in Colorado
41,691 verified black crowned night heron records have been logged in Colorado, most recently in 2026. See the GBIF records.
Where to look in Colorado
- Bent's Old Fort National Historic Site · Wildlife Watching, Birdwatching · Find hotels
- Black Canyon Of The Gunnison National Park · Wildlife Watching, Birdwatching · Find hotels
- Colorado National Monument · Wildlife Watching · Find hotels
- Curecanti National Recreation Area · Wildlife Watching, Birdwatching · Find hotels
- Dinosaur National Monument · Wildlife Watching, Birdwatching · Find hotels
- Great Sand Dunes National Park & Preserve · Wildlife Watching, Birdwatching · Find hotels
- Pueblo Reservoir · 373 species recorded
- Barr Lake SP · 358 species recorded
- John Martin Reservoir · 352 species recorded
- Chatfield SP (Douglas Co.) · 349 species recorded
- Cherry Creek SP · 348 species recorded
- Chatfield SP (Jefferson Co.) · 336 species recorded
Birding hotspots via eBird (Cornell Lab).
Recent black crowned night heron sightings
- Quail Court Home · 2026-07-20 20:00 · 1 seen
- I-25 S, Denver US-CO 39.73226, -105.01595 · 2026-07-20 19:42 · 1 seen
- Fountain Creek Regional Park--Area 4 · 2026-07-20 19:01 · 1 seen
- Lake Arbor · 2026-07-20 10:44 · 4 seen
- Walden Reservoir · 2026-07-20 08:54 · 12 seen
More wildlife in Colorado