Are There Great Horned Owls in Iowa?
Yes, Great Horned Owls are year-round residents throughout Iowa, inhabiting deciduous forests, river bluffs, and woodlands in the state's heavily agricultural landscape. These large nocturnal predators thrive in forest remnants and protected areas. Iowa supports healthy populations of this formidable raptor across both eastern and western regions.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 20, 2026.
Great Horned Owl · Isaac Winkler CC BY
Great Horned Owl · Isaac Winkler CC BY
Great Horned Owl · Public domain CC0
- 1
- species recorded
- 7,240
- GBIF records
- 6
- birding hotspots
- July, April, September
- peak months
Yes, great horned owls are in Iowa. Next you'll want:
Real sighting data, source iNaturalist
182 verified observations on iNaturalist of great horned owl have been recorded in Iowa, most often in July, April, September.
When great horned owl are recorded in Iowa
Yes, Great Horned Owls are year-round residents throughout Iowa, inhabiting deciduous forests, river bluffs, and woodlands in the state's heavily agricultural landscape. These large nocturnal predators thrive in forest remnants and protected areas. Iowa supports healthy populations of this formidable raptor across both eastern and western regions.
Where Great Horned Owls Are Found in Iowa
Great Horned Owls occupy forested regions throughout Iowa, adapting to the state's agricultural landscape. The Mississippi River bluffs in eastern Iowa provide important habitat with steep slopes and mature deciduous forests. The Loess Hills of northwestern Iowa provide another distinctive habitat with forested bluffs and valleys. Central Iowa forests with oak-hickory composition support populations despite agriculture dominating the landscape. Western Iowa forests along the Missouri River valley provide riparian habitat. Riparian corridors along the Cedar River, Iowa River, Des Moines River, and other watercourses provide critical habitat with mature trees. State parks and nature preserves throughout Iowa host accessible populations, including Ledges State Park and others. University lands and institutional properties support populations. Urban and suburban parks with mature trees throughout Des Moines, Cedar Rapids, Davenport, and other cities support resident populations. Private woodlots and hedgerow trees in agricultural regions provide habitat for mobile hunting populations. The state's transition from eastern deciduous forests to western prairie edge forests provides diverse habitat. Seethe Great Horned Owl guide for Iowafor more.
Season and Timing in Iowa
Great Horned Owls in Iowa are year-round residents that do not migrate. Breeding begins early, with pairs establishing territories in December and January and laying eggs by February and early March. This early timing allows young to fledge by late spring when prey increases. The breeding season runs from December through June, with the most intense territorial calling occurring in January and February. Pairs duet loudly during this period. Eggs typically hatch in late February and March, and young fledge by May and June. Fledglings remain dependent on parents through summer and early fall. Throughout summer and fall, owls remain active but less vocal. Iowa's four-season climate provides year-round hunting opportunities. Spring flooding along rivers concentrates prey. Fall and winter offer challenges including reduced prey visibility and snow cover. Iowa's cold winters present survival challenges, though established populations endure these conditions. Sightings are possible in all seasons. Seethe Iowa wildlife guidefor more.
How to Identify a Great Horned Owl
Great Horned Owls are Iowa's largest common owl and unmistakable when observed. Adults measure 18 to 25 inches tall with wingspans reaching 60 inches. The most distinctive feature is a pair of prominent ear tufts extending from the top of the head. Iowa's Great Horned Owls typically display gray-brown or russet-brown plumage with darker streaking. The facial disc is relatively flat and broadly rounded. The eyes are large, forward-facing, and bright yellow, creating an intensely fierce expression. A dark facial mask surrounds the yellow eyes. Females are noticeably larger than males. In flight, Great Horned Owls appear large and powerful with broad wings and a short tail. Juvenile owls lack prominent ear tufts and appear fluffier and browner. The call is distinctive, a series of deep hooting notes, typically four to five booms sounding like "hoo-hoo-hoo, hoo-hoo." In Iowa's forests and river valleys, this call carries considerable distances. Seethe national wildlife hubfor more.
Where Sightings Concentrate in Iowa
Great Horned Owl sightings in Iowa concentrate in forested habitats and protected areas. Mississippi River bluffs in eastern Iowa provide scenic and productive habitat. Ledges State Park and other state parks host populations in accessible habitat. Loess Hills region of northwestern Iowa concentrates populations in forested bluffs. University lands and institutional properties support populations. Urban parks with mature trees throughout Des Moines, Davenport, and other cities provide accessible viewing. Riparian areas along major rivers offer productive habitat. The best viewing strategy involves visiting forest habitat during the breeding season from December through March and listening for territorial calling. Early morning before dawn or at dusk offers the best chances to hear calling owls. Nocturnal visits during breeding season yield reliable sightings through audio. Daytime observations require searching dense trees. Visit/wildlife/iowafor wildlife viewing opportunities.
Typical Behavior and Diet
Great Horned Owls in Iowa are fierce nocturnal predators with diets reflecting the state's eastern fauna. Cottontail rabbits and fox squirrels provide substantial meals, particularly in fall and winter. Gray squirrels, fox squirrels, and flying squirrels are taken regularly. Voles, mice, rats, and other rodents supplement the diet. Opossums and raccoons are taken occasionally. Great Horned Owls will hunt skunks despite their defensive spray. Waterfowl including ducks provide seasonal prey. Crows and large birds are captured when opportunities arise. The hunting strategy involves perching on prominent branches and listening intently for prey movements. The owl's exceptional night vision and asymmetrical ear placement allow pinpointing of prey. Once located, the owl dives silently at speeds exceeding 150 miles per hour. Great Horned Owls are fierce competitors for food and territory. Roosting behavior involves spending daylight hours perched in dense trees.
Coexistence and Safety
Great Horned Owls in Iowa pose no threat to humans and can be safely observed from appropriate distances. These owls do not attack people. Avoiding direct approach to active nesting sites, particularly from December through June, is respectful practice. If you encounter a fledgling owl on the ground in spring or summer, it is likely a young owl still being cared for by parents and should be left alone. Great Horned Owls are protected under federal law. Iowa has no state threatened or endangered listing for the species. Vehicle collisions can occur in suburban and rural areas. Rodent poison can accumulate in owl tissues. Habitat loss from agriculture reduces available nesting sites. Coexistence is straightforward: enjoy observing these remarkable predators.
Species Confusion in Iowa
Several owl species in Iowa might be confused with Great Horned Owls, though distinctive features aid identification. The Barred Owl shares Iowa's forest habitat and is Iowa's second most common large owl. Barred Owls lack ear tufts and have dark brown eyes. Their facial pattern is uniformly barred. Their hooting sounds like "who cooks for you," quite different from the Great Horned Owl's call. The Barn Owl is pale-faced and lacks ear tufts. Short-eared Owls have small ear tufts and hunt in daylight. Eastern Screech-Owls are tiny. Long-eared Owls are smaller and more delicate. Size alone eliminates most confusion.
Frequently Asked Questions
When are Great Horned Owls most active in Iowa? Great Horned Owls hunt primarily in the first few hours after sunset and again in the hours before dawn. What is the best season to observe Great Horned Owls in Iowa? The breeding season from December through March offers the best viewing opportunities. Can Great Horned Owls coexist with Barred Owls in Iowa? Yes, both species share Iowa's forests and coexist through habitat preferences. Are Great Horned Owls a threat to small pets in Iowa? Small outdoor pets left at night can potentially be taken. Learn more about Iowa wildlife at/wildlife/iowa.
Plan your trip
Best time to see great horned owl in Iowa: July, April, September
See the month-by-month sighting calendar.
Plan your great horned owl sighting in Iowa
7,240 verified great horned owl records have been logged in Iowa, most recently in 2026. See the GBIF records.
Where to look in Iowa
- Effigy Mounds National Monument · Wildlife Watching, Birdwatching · Find hotels
- Herbert Hoover National Historic Site · Wildlife Watching, Birdwatching · Find hotels
- Lewis & Clark National Historic Trail · Wildlife Watching · Find hotels
- Mormon Pioneer National Historic Trail · Find hotels
- Saylorville Reservoir (general location—use more specific hotspots) · 334 species recorded
- Red Rock Reservoir (general location—use more specific hotspots) · 318 species recorded
- Hawkeye WMA (general location) · 306 species recorded
- Saylorville Reservoir--Jester Park (general location) · 279 species recorded
- Ada Hayden Heritage Park (general location) · 275 species recorded
- Green Island WMA · 275 species recorded
Birding hotspots via eBird (Cornell Lab).
Recent great horned owl sightings
- 28633 216th Ave, La Motte US-IA 42.28350, -90.64602 · 2026-07-19 20:05 · 1 seen
- Palisades-Kepler State Park, Mount Vernon US-IA 41.90956, -91.51124 · 2026-07-19 07:20 · 1 seen
- Lewis Bottoms marsh (private property--view from road or public property) · 2026-07-17 09:57 · 1 seen
- 14465 Great River Rd, McGregor US-IA 43.01385, -91.18363 · 2026-07-16 21:32 · 1 seen
- Grand Mound lagoons (observe from road only) · 2026-07-13 20:30 · 2 seen
More wildlife in Iowa