Are There Great Horned Owls in Delaware?
Yes, Great Horned Owls are year-round residents throughout Delaware, inhabiting forest patches, coastal marshes, and swamps across the entire state. These nocturnal predators thrive in Delaware's diverse habitats from the Piedmont forests to the coastal plain wetlands. Delaware supports healthy populations of this powerful raptor despite its small land area.
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 · Elizabeth Green CC BY
Great Horned Owl · inbetweenbays CC BY
Great Horned Owl · Alina Martin CC BY
- 1
- species recorded
- 7,015
- GBIF records
- 6
- birding hotspots
- April, July, March
- peak months
Yes, great horned owls are in Delaware. Next you'll want:
Real sighting data, source iNaturalist
150 verified observations on iNaturalist of great horned owl have been recorded in Delaware, most often in April, July, March.
When great horned owl are recorded in Delaware
Yes, Great Horned Owls are year-round residents throughout Delaware, inhabiting forest patches, coastal marshes, and swamps across the entire state. These nocturnal predators thrive in Delaware's diverse habitats from the Piedmont forests to the coastal plain wetlands. Delaware supports healthy populations of this powerful raptor despite its small land area.
Where Great Horned Owls Are Found in Delaware
Great Horned Owls occupy forested regions throughout Delaware, adapting to the state's small size and dense human population. The northern forests of the Piedmont region, including scattered woodlots and forest patches, provide habitat. Central Delaware's forests, including remnant swamp and bottomland hardwood areas, concentrate owl populations. Coastal plain forests and maritime forests provide productive habitat. Specific locations include Blackbird State Forest, Lum's Pond State Park, and various other state parks and protected areas. Cypress and tupelo swamps in southern Delaware, including wetland areas near the Delaware River and other watercourses, provide excellent habitat where large dead trees offer roosting and nesting sites. Riparian corridors along the Delaware River, Nanticoke River, and other major watercourses provide critical habitat with tall trees. Coastal marshes and tidal areas of Delaware Bay provide habitat in scattered trees and shrubland. Urban and suburban areas throughout Delaware with parks, woodlots, and residential vegetation support adapted populations. Even in developed areas, mature shade trees and small forest patches support roosting owls. Private farmland with hedgerow trees and shelter belts provides habitat for mobile hunting populations. The state's humid subtropical to temperate climate supports deciduous and mixed forests suitable for Great Horned Owls throughout. Seethe Great Horned Owl guide for Delawarefor more.
Season and Timing in Delaware
Great Horned Owls in Delaware 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 populations increase significantly. 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, with both males and females calling to establish and defend territory. Eggs typically hatch in late February and March, and young fledge by May and June. Fledglings remain dependent on parents well into summer and early fall. Throughout summer and fall, owls remain active but less vocal than during breeding season. Delaware's four-season climate provides year-round hunting opportunities. Spring and summer flooding of rivers and wetlands can concentrate prey temporarily, making hunting more productive. Fall and winter offer challenges including reduced prey visibility. Sightings are possible in all seasons, though owls are most vocal and easily located during the breeding season. Seethe Delaware wildlife guidefor more.
How to Identify a Great Horned Owl
Great Horned Owls are Delaware'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. Delaware's Great Horned Owls typically display gray-brown or russet-brown plumage with darker streaking providing camouflage in forest shadows and against tree bark. The facial disc is relatively flat and broadly rounded. The eyes are large, forward-facing, and bright yellow, creating an intensely fierce and predatory expression. A dark facial mask surrounds the yellow eyes. Females are noticeably larger than males, sometimes weighing 20 to 25 percent more. In flight, Great Horned Owls appear large and powerful with broad wings and a short tail, flying with direct, purposeful wing beats. Juvenile owls lack prominent ear tufts and appear fluffier and browner than adults. The call is distinctive, a series of deep hooting notes, typically four to five booms that sound like "hoo-hoo-hoo, hoo-hoo." In Delaware's forests and swamps, this call carries considerable distances through the night. Seethe national wildlife hubfor more.
Where Sightings Concentrate in Delaware
Great Horned Owl sightings in Delaware concentrate in specific habitat types accessible to observers. Blackbird State Forest in northern Delaware provides accessible deciduous forest habitat. Lum's Pond State Park offers forest and wetland areas. Inland Bays areas with marsh vegetation and scattered trees concentrate populations. State wildlife areas and nature preserves throughout the state support accessible populations. Coastal marshes and tidal areas of Delaware Bay provide opportunities for observations in semi-open habitat. University properties and institutional lands support significant populations. Suburban parks with mature trees throughout the state provide accessible viewing opportunities. The best viewing strategy involves visiting suitable 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 to parks and forests yield reliable sightings through audio. Daytime observations require searching dense trees where roosting owls hide in shadows. Small songbirds mobbing owls provide clues to roosting locations. Evidence of presence includes regurgitated pellets beneath roosting trees and whitewash on branches and trunks. Visit/wildlife/delawareto explore more about the state's wildlife.
Typical Behavior and Diet
Great Horned Owls in Delaware 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 when these animals are abundant. Gray squirrels, red 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 and geese provide seasonal prey in coastal and wetland areas. Crows, jays, and other large birds are captured when opportunities arise. The hunting strategy involves perching on prominent branches in forest edges and listening intently for prey movements. The owl's exceptional night vision and asymmetrical ear placement allow pinpointing of prey with remarkable accuracy. Once located, the owl dives silently at speeds exceeding 150 miles per hour to capture prey. Great Horned Owls are fierce competitors for food and territory. Roosting behavior involves spending daylight hours perched in dense trees, typically in evergreen or dense deciduous cover where shadows provide excellent camouflage. Solitary roosting is typical outside the breeding season.
Coexistence and Safety
Great Horned Owls in Delaware pose no threat to humans and can be safely observed from appropriate distances. These owls do not attack people under normal circumstances. 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 by the Migratory Bird Treaty Act, making it illegal to harm them. Delaware has no state threatened or endangered listing for Great Horned Owls, and populations remain stable. Vehicle collisions can occur in suburban and rural areas where owls hunt. Rodent poison used for pest control can accumulate in owl tissues over time. Habitat loss from development continues to reduce available nesting sites, though Delaware's remaining forests still support populations. Coexistence is straightforward: enjoy observing these remarkable predators while maintaining respectful distance from nesting areas and recognizing their ecological role.
Species Confusion in Delaware
Several owl species in Delaware might be confused with Great Horned Owls, though distinctive features aid identification. The Barred Owl shares Delaware's forest habitat and is Delaware's second most common large owl. Barred Owls lack ear tufts and have dark brown eyes rather than yellow. Their facial pattern is uniformly barred, and their expression is rounder and less fierce. Their hooting sounds like "who cooks for you," quite different from the Great Horned Owl's deeper call. The Barn Owl is pale-faced and lacks ear tufts, with a heart-shaped facial disc. Barn Owls prefer open grasslands and marshes. Short-eared Owls have small ear tufts and hunt in daylight. Eastern Screech-Owls are tiny, only 7 to 10 inches tall, with smaller ear tufts. Long-eared Owls are smaller and more delicate. Size alone eliminates most confusion, with Great Horned Owls being significantly larger than other Delaware owl species.
Frequently Asked Questions
When are Great Horned Owls most active in Delaware? Great Horned Owls hunt primarily in the first few hours after sunset and again in the hours before dawn. Hunting activity peaks during twilight periods when light levels allow visibility. What is the best season to observe Great Horned Owls in Delaware? The breeding season from December through March offers the best viewing opportunities due to increased vocal activity and more predictable roosting. Can Great Horned Owls coexist with Barred Owls in Delaware? Yes, both species share Delaware's forests and coexist through habitat preferences and hunting strategies. Competition between species occurs occasionally. Are Great Horned Owls a threat to pets in Delaware? Small outdoor pets left at night can potentially be taken. Keeping pets indoors at night protects them from predation. Learn more about Delaware wildlife at/wildlife/delaware.
Plan your trip
Best time to see great horned owl in Delaware: April, July, March
See the month-by-month sighting calendar.
Plan your great horned owl sighting in Delaware
7,015 verified great horned owl records have been logged in Delaware, most recently in 2026. See the GBIF records.
Where to look in Delaware
- Captain John Smith Chesapeake National Historic Trail · Wildlife Watching, Birdwatching · Find hotels
- Chesapeake Bay · Wildlife Watching · Find hotels
- First State National Historical Park · Find hotels
- Washington-Rochambeau Revolutionary Route National Historic Trail · Find hotels
- Cape Henlopen State Park · 355 species recorded
- Bombay Hook National Wildlife Refuge · 339 species recorded
- Prime Hook National Wildlife Refuge · 339 species recorded
- Cape Henlopen Hawk Watch · 311 species recorded
- Prime Hook NWR--Fowler Beach Rd./Fowler Beach · 294 species recorded
- Bombay Hook NWR--Refuge Headquarters · 291 species recorded
Birding hotspots via eBird (Cornell Lab).
Recent great horned owl sightings
- Assawoman Canal - Bethany Beach · 2026-07-20 03:20 · 1 seen
- Milford Neck Wildlife Area--Big Stone Beach Rd. · 2026-07-11 04:51 · 2 seen
- TMR Backyard · 2026-07-10 03:59 · 1 seen
- White Clay Creek SP--Thompson Station Rd. · 2026-07-05 · 2 seen
- Woods on Herring Creek · 2026-06-27 16:48 · 1 seen
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