Iowa’s rolling farmland and river-bottom timber don’t look like prime owl habitat at first glance, yet twelve owl species have been documented across the state, and several of them are far more common than most residents realize.
Some, like the types of owls in Iowa that nest here every year, spend their entire lives within a few square miles of a favorite woodlot. Others show up only during unpredictable winters, pushed south from the Arctic tundra by food shortages hundreds of miles away.
Not every species on this list turns up annually. A handful nest in Iowa every spring, a few pass through only on migration, and a small group has been recorded just a handful of times in the state’s entire birding history. Learning the calls, habitats, and seasonal patterns of each one turns a random noise at dusk into a genuine identification, and this rundown covers all twelve, starting with the owl nearly every Iowan has already heard.
| Common Name | Iowa Status | Best Season to Spot | Typical Habitat |
|---|---|---|---|
| Great Horned Owl | Common, year-round resident | Year-round; calls most in winter | Woodlots, farm groves, urban parks |
| Barred Owl | Common, year-round resident | Year-round; vocal in fall | Mature river-bottom forest |
| Eastern Screech-Owl | Common, year-round resident | Year-round | Wooded neighborhoods, small woodlots |
| Barn Owl | Rare, state species of concern | Year-round where present | Grasslands, barns, nest boxes |
| Short-eared Owl | Uncommon winter visitor, rare nester | Late fall through winter | Open grasslands, prairies, marsh edges |
| Long-eared Owl | Uncommon migrant and winter resident | Fall through early spring | Dense conifer or willow roosts |
| Burrowing Owl | Very rare, historic breeder | Spring through fall, if present | Short-grass prairie, ground burrows |
| Snowy Owl | Irregular winter visitor | Late fall through early spring | Open fields, airports, prairies |
| Northern Saw-whet Owl | Uncommon migrant, rare winter resident | October through April | Dense conifer groves |
| Northern Hawk Owl | Accidental winter vagrant | Winter, in rare irruption years | Open country with scattered perches |
| Great Gray Owl | Accidental winter vagrant | Winter, in rare irruption years | Open woodland edges near fields |
| Boreal Owl | Extremely rare, accidental | Winter, on rare occasions | Dense conifer forest |
Pro Tip: Most owls are far easier to hear than to see. Head outside within an hour of sunset on a calm, clear evening and listen near woodland edges, since wind and rain suppress owl calling almost entirely.
1. Great Horned Owl
The Great Horned Owl (Bubo virginianus) is the species behind most of the deep hooting Iowans hear after dark. According to the Cornell Lab of Ornithology, this powerful predator can take down birds and mammals even larger than itself, but it also dines on daintier fare such as tiny scorpions, mice, and frogs. The same source notes that these are large, thick-bodied owls with two prominent feathered tufts on the head, and Great Horned Owls are mottled gray-brown, with reddish brown faces and a neat white patch on the throat.
Diet-wise, the species has few rivals. Great Horned Owls have the most diverse diet of all North American raptors, and in Iowa that list stretches from rabbits and voles to the occasional snake pulled from a fencerow; readers curious about the reptiles that turn up on the local menu can check the types of snakes in Iowa guide for context. Rather than building a nest from scratch, pairs typically take over an abandoned hawk, crow, or squirrel nest each winter.
Timing sets this owl apart from nearly every other Iowa bird. The great horned owl is one of the earliest nesting birds in North America, often laying eggs weeks or even months before other raptorial birds, which means incubating females can be sitting on eggs during a January snowstorm. Listen for a deep, stuttering series of four to five hoots at dusk, since their call is a deep, stuttering series of four to five hoots repeated from a high perch.
2. Barred Owl
The Barred Owl (Strix varia) favors the mature, river-bottom forests found along the Cedar, Iowa, and Mississippi rivers, where large trees provide the natural cavities it needs for nesting. Its rounded head lacks ear tufts entirely, and its dark eyes stand out against a streaked brown-and-white body, a look that separates it instantly from the yellow-eyed Great Horned Owl sharing the same woods.
Barred Owls hunt a broad mix of small mammals, amphibians, and even crayfish snatched from shallow streams, making wooded wetlands and floodplains especially productive habitat. Anyone tracking the amphibians this owl relies on can compare notes with the types of frogs in Iowa resource, since frog populations often signal healthy Barred Owl territory.
Its rhythmic, eight-note call is often rendered as asking “who cooks for you,” and it carries well through still forest air, especially during the species’ vocal peak in late summer and early fall. Because Barred Owls tend to stay put year-round rather than wandering, a territory that hosts a calling pair one autumn will usually host owls again the following year.
3. Eastern Screech-Owl
Despite the name, the Eastern Screech-Owl (Megascops asio) doesn’t screech at all; its signature sound is a descending, horse-like whinny or a soft, even trill. This compact owl comes in two color forms, gray and reddish-brown, and both morphs can turn up in the same neighborhood or even the same nest of siblings.
At roughly the size of a soda can, the Eastern Screech-Owl is Iowa’s smallest common owl and one of the few that thrives in town, nesting in tree cavities, old woodpecker holes, and even backyard nest boxes. Its diet leans heavily on large insects and small vertebrates, and it will readily take moths, beetles, and even caterpillars when they’re abundant, a habit that overlaps with the species covered in the types of caterpillars in Iowa guide.
Unlike most owls on this list, the Eastern Screech-Owl stays in Iowa through every season rather than migrating, relying on dense bark camouflage to disappear against a tree trunk during daylight hours. A homeowner who installs a properly sized nest box in a wooded yard has a genuine chance of hosting a breeding pair.
4. Barn Owl
The Barn Owl (Tyto alba) is unmistakable once seen up close, with a pale, heart-shaped facial disc, dark eyes, and a ghostly white underside that seems to glow in headlights along rural roads at night. Long legs and silent, moth-soft wingbeats let it hunt voles and mice over open grassland almost without a sound.
This is the rarest owl on the list in Iowa, and it depends heavily on large, undisturbed grasslands paired with safe nesting sites such as old barns, silos, or purpose-built nest boxes. As row-crop agriculture replaced hayfields and pastures across much of the state, suitable Barn Owl habitat shrank along with it, and the species now ranks among the birds tracked in the endangered animals in Iowa overview.
Important Note: Barn Owls are extremely sensitive to nest disturbance. If a pair is discovered roosting in a barn or outbuilding, the best approach is to leave the area undisturbed and report the sighting to a local conservation office rather than approaching for a closer look.
5. Short-eared Owl
The Short-eared Owl (Asio flammeus) is one of the few owls that regularly hunts in daylight, gliding low and buoyant over grasslands and marsh edges in the hours around dawn and dusk. Its short, barely visible ear tufts and streaky, buff-colored plumage help it blend into the dried grass it patrols for voles and mice.
Iowa sees more Short-eared Owls in winter than summer, when migrants from prairie Canada join the small resident population. Nesting here is uncommon; as one Iowa outdoor writer for The Gazette put it, long-eared and short-eared owls are rare nesters in Iowa, and it is thought short-eared was once a more common nester, particularly in northern Iowa.
During the day, they roost low, often flushed accidentally by pheasant hunters walking through grassy cover, since short-eared owls roost in tall grasses and are sometimes flushed by pheasant hunters.
Grassland restoration projects have helped stabilize wintering numbers in some parts of the Midwest, including habitat comparable to sites covered in the types of owls in Minnesota guide, where the species follows a similar seasonal pattern.
6. Long-eared Owl
The Long-eared Owl (Asio otus) is a master of daytime camouflage, stretching its slender body tall and pressing its long, close-set ear tufts flat against a tree trunk to look almost like a broken branch. Its orange facial disc and streaked underparts add to the disguise, making roosting birds genuinely difficult to spot even when they’re only a few feet off the ground.
Roost site choice is one of the clearest ways to tell this species apart from its Short-eared cousin. Both “eared” species roost in the daytime, with long-eared preferring dense stands of conifers or willow thickets, according to The Gazette, often gathering in small communal roosts of several birds during winter.
Nesting Long-eared Owls remain scarce in Iowa, with most records coming from migration and winter rather than the breeding season. Birders hoping to find a roost often check dense cedar groves and shelterbelts, the same type of cover favored by the species in neighboring states profiled in the types of owls in Wisconsin guide.
7. Burrowing Owl
The Burrowing Owl (Athene cunicularia) breaks nearly every rule associated with owls: it hunts by day, stands on long, exposed legs, and nests underground rather than in a tree cavity. Small and sandy-brown with piercing yellow eyes, it often perches right at the entrance of its burrow, bobbing and bowing when alarmed.
This species relies on abandoned burrows dug by ground squirrels or other burrowing mammals within short-grass prairie, habitat that has become scarce across much of Iowa’s row-crop landscape. Historic breeding records exist from the state’s western grasslands, but confirmed nesting in Iowa is now exceptionally rare, and most modern sightings are best-effort reports from the prairie regions that still support the species further west, similar to the population documented in the types of owls in Kansas guide.
Where colonies persist, Burrowing Owls tend to nest loosely together, and their diet of large insects and small rodents makes them useful indicators of healthy grassland insect populations.
8. Snowy Owl
Few birds generate as much excitement among Iowa birders as the Snowy Owl (Bubo scandiacus), a massive white owl built for the Arctic tundra. Snowy owls are large owls, standing 22 to 27 inches tall, with bright yellow eyes, and their heavy white plumage, sometimes flecked with dark barring on younger birds, makes them stand out sharply against a plowed brown field.
Snowy Owls breed in the open landscapes of the Arctic tundra, and during summers with abundant food, particularly lemmings, many young are produced; the following winter, many of those young owls disperse south into the US to look for winter prey. Unlike nearly every other owl on this list, Snowy Owls are active during the day and can be spotted in open areas, like agricultural fields and airports, looking for food, sitting motionless for long stretches while scanning for voles and rabbits.
Sightings vary enormously from year to year. Although snowy owls are native to Iowa, with a few spotted in the state on an annual basis, an irruption only happens roughly every four years following a summer of high breeding numbers, according to reporting from the Sun Courier. More recently, Audubon magazine documented a fresh surge during the 2025–2026 winter, noting that since late October, something unexpected has been happening: Snowy Owls have been showing up all over the place, with sightings rapidly increasing throughout November and December in areas including Iowa.
Key Insight: Snowy Owl irruptions track Arctic lemming cycles, not harsh winters in Iowa. A booming lemming population means more surviving owlets, and more competition for territory once winter arrives, which is what pushes young owls hundreds of miles south.
Anyone who finds a Snowy Owl should stay well back and avoid flushing it from its perch, since every wasted flight burns energy the bird needs to survive the winter far from its usual hunting grounds. Reports through types of owls in Maine, another state along the same irruption corridor, show a nearly identical seasonal pattern.
9. Northern Saw-whet Owl
The Northern Saw-whet Owl (Aegolius acadicus) is roughly the size of a robin, making it the smallest owl reliably found in Iowa. Its round head, lack of ear tufts, and oversized yellow eyes give it an almost cartoonish appearance, and its cryptic brown-and-white plumage helps it vanish against dense conifer branches during the day.
Iowa sits along this species’ migration corridor rather than its breeding range, meaning most sightings occur during the fall push south, when birds funnel through dense cedar groves and pine plantations to rest during daylight. A handful overwinter each year in especially thick conifer stands, tucked close to the trunk where they’re almost impossible to spot without a tip from another birder.
Its call, a repetitive, mechanical-sounding tooting reminiscent of a truck backing up, gives the species its name, since early naturalists thought it resembled the sound of a saw being sharpened. Researchers in several states, including sites covered by the types of owls in Vermont guide, use nighttime banding stations to track this species’ migration timing each fall.
10. Northern Hawk Owl
The Northern Hawk Owl (Surnia ulula) looks and behaves more like a small falcon than a typical owl, with a long tail, pointed wings, and a habit of hunting in broad daylight from an exposed treetop perch. Its facial disc is bordered by a distinct black frame, giving it a fierce, alert expression even at rest.
This species belongs to the boreal forests of Canada and rarely wanders as far south as Iowa, appearing only in scattered irruption years when food becomes scarce farther north. When one does show up, it tends to favor open country dotted with scattered perches, from utility poles to lone snags, where it can scan a wide stretch of field for voles.
Because sightings are so infrequent, a confirmed Northern Hawk Owl report in Iowa typically draws birders from across the state within hours. Its diurnal habits actually make it one of the easier rare owls to photograph, since there’s no need to wait until dark.
11. Great Gray Owl
The Great Gray Owl (Strix nebulosa) is the tallest owl in North America by length, though its imposing size is mostly an illusion created by dense, fluffy plumage; beneath all those feathers, it actually weighs less than a Great Horned Owl. Its enormous facial disc, marked with concentric gray rings and a small yellow-eyed stare at the center, is unmistakable.
This owl breeds in the boreal forests and muskeg of Canada and the northern Rockies, and its appearances in Iowa are limited to rare winter irruptions tied to prey shortages farther north. When present, it hunts by sound alone, capable of detecting a vole moving beneath more than a foot of snow before plunging through the crust feet-first to catch it.
Common Mistake: The similar names lead some observers to assume a “Great Gray Owl” report is just a pale Great Horned Owl. The two look nothing alike up close; the Great Gray lacks ear tufts entirely and has a far larger, flatter facial disc.
12. Boreal Owl
The Boreal Owl (Aegolius funereus) is the rarest of Iowa’s twelve documented owl species and among the hardest to find anywhere south of Canada. Small, round-headed, and marked with white spotting across a chocolate-brown back, it closely resembles an oversized Northern Saw-whet Owl at first glance, though its darker facial disc and black-bordered face set it apart on closer inspection.
This species nests in old woodpecker cavities deep within boreal spruce and fir forests far to the north, and it almost never leaves that range except during severe food shortages. Confirmed Iowa records sit on the rarest end of the state’s official bird list, and a sighting here is treated as a genuinely exceptional event rather than a once-a-decade expectation.
Its call, a fast, rising series of hollow whistles, is rarely heard outside the breeding season, and even dedicated owl researchers in its core range consider the species notoriously difficult to survey. For Iowa birders, the Boreal Owl remains more of a theoretical possibility than a realistic target on any given winter outing.
Twelve species, ranging from a common backyard resident to a bird recorded only a handful of times in state history, make Iowa a genuinely rewarding place to look and listen for owls. Reporting sightings to Iowa DNR biologists or logging them on platforms like eBird helps researchers track exactly how these populations shift from one winter to the next.
Readers curious about how Iowa’s owl lineup compares elsewhere can also explore the types of owls in Louisiana and different types of owls guides for a broader look at North America’s nocturnal hunters.