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

Hooded Warbler Population Trend in South Carolina

All statesForest birds

Hooded Warbler in South Carolina has edged down: down 14% on the route-weighted index since 1968.

-14%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 →
45Routes 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 →
58YearsYears 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 rise about 38% by 2029 — from 1.1 in 2024 to a central estimate of 1.6 (95% range 0.73–2.4). A 5-year backtest shows a typical error of ±18.7%, with 100% of held-out values landing inside the 95% band.

+38%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 →
1.6Projected 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 →
0.73–2.495% 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 →
±18.7%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 rise about 38% by 2029 — from 1.1 in 2024 to a central estimate of 1.6 (95% range 0.73–2.4). A 5-year backtest shows a typical error of ±18.7%, 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 →
20251.60.712.4
20261.60.722.4
20271.60.722.4
20281.60.722.4
20291.60.732.4

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 →
Boykin Ml Pd619681966
Battlecreek520241999
Walterboro420171971
Whitmire420242010
Ridgeway420212010
Salem420242010
Barton Creek320181973
Sandhills320241996
Carvers Bay320121998
Cauthens Xrd320191982
Rome220241967
Holly Hill220231973
Foreston220211971
Wagener220211968
Plum Branch220241978
Nixonville219881988
Blacksburg220071998
Mount Pisgah220171998
Dale220241998
Jamestown120191969
Hardeeville120241968
Coward120221966
New Holland120241967
Dillon120211972
Bishopville120161970

Hooded Warbler Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianakentuckylouisianamarylandmassachusettsmichiganmississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandtennesseetexasvirginiawest-virginiawisconsin

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