BirdAnalyst
Species · South Carolina · BBS 2025 Release · 1966–2024

Barred Owl Population Trend in South Carolina

All statesGeneralists

Barred Owl in South Carolina has declined: down 29% on the route-weighted index since 1968.

-29%Since 1968TrendPercent 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 →
38Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
56YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

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

No notable trend signals for Barred Owl in South Carolina. See the full index history below.

Barred Owl Population Forecast in South Carolina

If the recent trend holds, Barred Owl in South Carolina is projected to rise about 114% by 2029 — from 0.10 in 2024 to a central estimate of 0.20 (95% range 0.00–0.48). A 5-year backtest shows a typical error of ±84.1%, with 100% of held-out values landing inside the 95% band.

+114%Change by 2029TrendPercent 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 →
0.20Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.4895% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±84.1%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Barred Owl in South Carolina is projected to rise about 114% by 2029 — from 0.10 in 2024 to a central estimate of 0.20 (95% range 0.00–0.48). A 5-year backtest shows a typical error of ±84.1%, with 100% 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 →
20250.210.000.49
20260.210.000.48
20270.210.000.48
20280.200.000.48
20290.200.000.48

Barred Owl Survey Routes in South Carolina

Routes recording Barred Owl in South Carolina.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Sandhills320221998
Jamestown220051978
Hardeeville220231972
Rome220121968
Holly Hill220191977
Foreston220091980
Dillon220181989
Boykin Ml Pd219681966
Walterboro220171977
Greenwood220171998
Bennettsville220072002
Adams Run220231989
Red Bluff220232023
Coward120241976
New Holland119781978
Wagener120191967
Bishopville119921983
Little Mtn119731966
Salem Xrd120111983
Barton Creek120222006
Plum Branch119971984
Nixonville119921987
Green Sea120232023
Ridgeway120212010
Salem120192016

Barred Owl Population Trend in Other States

alabamaalaskaarkansascaliforniaconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandtennesseetexasvermontvirginiawashingtonwest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.