Species · BBS 2025 Release · 1966–2024

Barred Owl

Barred Owl has surged: up 124% on the route-weighted index since 1968.

About the Barred Owl

The Barred Owl (Strix varia) is a North American member of the Owls (Strigidae). In this analysis it is grouped with the birds of prey.

Size
5–27.5 in long (13–70 cm) — a nocturnal raptor (typical for the family)
Habitat
Open country, woodlands, cliffs and wetlands, hunting from the air or a high perch.
Diet
Live prey — small mammals, birds, reptiles, fish and large insects (carrion for vultures).
Range
Recorded on 1,797 Breeding Bird Survey routes across 41 states, most concentrated in the Southeastern Coastal Plain.
Family
Strigidae · Birds of prey

Notable Barred Owl TrendsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

Barred Owl has surged in surveyed states: up 124% on the route-weighted index since 1968.

Barred Owl Population Forecast

If the recent trend holds, Barred Owl is projected to stay roughly flat through 2029, near 0.17 (95% range 0.15–0.20). A 5-year backtest shows a typical error of ±8.5%, with 80% of held-out values landing inside the 95% band.

If the recent trend holds, Barred Owl is projected to stay roughly flat through 2029, near 0.17 (95% range 0.15–0.20). A 5-year backtest shows a typical error of ±8.5%, with 80% of held-out values landing inside the 95% band.19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20250.170.140.19
20260.170.140.19
20270.170.140.20
20280.170.150.20
20290.170.150.20

Where the Barred Owl Is Detected

BBS routes recording Barred Owl, sized by most recent count.

Barred Owl Population Trend by State

Barred Owl population trend by state.
TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Alabama+66%196894
Alaskainsufficient datan/a2
Arkansas+59%196952
Californiainsufficient datan/a2
Connecticut+65%197916
Delaware+173%19708
Florida+110%196895
Georgia+307%197088
Idahoinsufficient datan/a6
Illinois+379%196876
Indiana+53%197035
Iowa+65%197319
Kansas12×196940
Kentucky+87%196942
Louisiana+122%197073
Maine+33%197545
Maryland+490%196861
Massachusetts+111%197622
Michigan+18%197649
Minnesota+65%197146
Mississippi+120%197055
Missouri+553%197381
Montanainsufficient datan/a3
Nebraskainsufficient datan/a6
New Hampshire+363%196925
New Jerseyinsufficient datan/a7
New York+197%196968
North Carolina+225%197084
Ohio+144%197040
Oklahoma+135%196951
Oregon-47%201114
Pennsylvania+122%197073
Rhode Island+118%19873
South Carolina-29%196838
Tennessee+181%196844
Texas-33%196982
Vermont+327%197425
Virginia+331%196965
Washington+142%199432
West Virginia+203%197548
Wisconsin+411%196882

Barred Owl Population Trend by Region

Bird Conservation Regions are the ecological unit for trends.

Barred Owl population trend by Bird Conservation Region.
TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Northern Pacific Rainforest+379%199833
Great Basin-40%199117
Northern Rockies-48%19928
Boreal Hardwood Transition+118%197093
Lower Great Lakes / St. Lawrence Plain+147%196939
Atlantic Northern Forest+247%1970118
Central Mixed Grass Prairie+123%197235
Edwards Plateau-50%19815
Oaks and Prairies+80%196956
Eastern Tallgrass Prairie+468%1968173
Prairie Hardwood Transition+205%196893
Central Hardwoods+283%1968132
West Gulf Coastal Plain / Ouachitas+5%196995
Mississippi Alluvial Valley+306%196858
Southeastern Coastal Plain+125%1968298
Appalachian Mountains+440%1968265
Piedmont+158%1969107
New England / Mid-Atlantic Coast+344%196892
Peninsular Florida+66%196854
Gulf Coastal Prairie-69%197018

Barred Owl Conservation Status

Our route-weighted index shows it up about 124% since 1968.

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. Trend is a route-weighted relative-abundance index, not an absolute population.