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Species · South Carolina · BBS 2026 Release · 1966–2025

Hooded Warbler Population Trend in South Carolina

All statesForest birds

Hooded Warbler in South Carolina has edged down: down 17% on the route-weighted index since 1968.

-17%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 →
46Routes 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 →
59YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Hooded Warbler 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 Hooded Warbler in South Carolina. See the full index history below.

Hooded Warbler Population Forecast in South Carolina

If the recent trend holds, Hooded Warbler in South Carolina is projected to stay roughly flat through 2030, near 1.6 (95% range 0.74–2.4). A 5-year backtest shows a typical error of ±14%, with 100% of held-out values landing inside the 95% band.

-6%Change by 2030TrendPercent 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 →
1.6Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.74–2.495% 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 →
±14%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, Hooded Warbler in South Carolina is projected to stay roughly flat through 2030, near 1.6 (95% range 0.74–2.4). A 5-year backtest shows a typical error of ±14%, with 100% of held-out values landing inside the 95% band.19662030
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 →
20261.60.732.4
20271.60.742.4
20281.60.742.4
20291.60.742.4
20301.60.742.4

Hooded Warbler Survey Routes in South Carolina

Routes recording Hooded Warbler 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 →
Battlecreek1120251999
Boykin Ml Pd619681966
Salem620252010
Whitmire420242010
Greenwood420251998
Dale420251998
Coward320251966
Barton Creek320181973
Carvers Bay320121998
Cauthens Xrd320191982
Owings 2320252008
Rome220251967
Foreston220211971
Wagener220211968
Walterboro220251971
Nixonville219881988
Ridgeway220252010
Blacksburg220071998
Adams Run220251988
Jamestown120191969
Hardeeville120251968
Holly Hill120251973
New Holland120241967
Dillon120211972
Bishopville120251970

Hooded Warbler Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianakentuckylouisianamarylandmassachusettsmichiganmississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandtennesseetexasvirginiawest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.