BirdAnalyst
Species · BCR 27 · BBS 2026 Release · 1966–2025

Common Yellowthroat In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainForest birds

Common Yellowthroat in Southeastern Coastal Plain has edged down: down 11% on the route-weighted index since 1968.

-11%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 →
345Routes In RegionSurvey 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 SignalsNotable 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 Common Yellowthroat in Southeastern Coastal Plain. See the full index history below.

Common Yellowthroat In Southeastern Coastal Plain Population Forecast

If the recent trend holds, Common Yellowthroat in Southeastern Coastal Plain is projected to fall about 10% by 2030 — from 10 in 2025 to a central estimate of 9.2 (95% range 6.3–12). A 5-year backtest shows a typical error of ±9.3%, with 100% of held-out values landing inside the 95% band.

-10%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 →
9.2Projected 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 →
6.3–1295% 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 →
±9.3%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, Common Yellowthroat in Southeastern Coastal Plain is projected to fall about 10% by 2030 — from 10 in 2025 to a central estimate of 9.2 (95% range 6.3–12). A 5-year backtest shows a typical error of ±9.3%, 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 →
20269.46.412
20279.46.412
20289.36.412
20299.36.312
20309.26.312

Routes In Southeastern Coastal Plain

Routes recording Common Yellowthroat in Southeastern Coastal Plain.
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 →
OlusteeFLORIDA1192025
MashoesNORTH-CAROLINA891982
NeedmoreGEORGIA781983
Dismal SwampNORTH-CAROLINA692024
OsceolaFLORIDA542025
Milltail CrNORTH-CAROLINA522025
GlenmoreGEORGIA462025
WashingtonNORTH-CAROLINA442025
Dismal SwampVIRGINIA422016
Broad BranchFLORIDA402025
Ft GadsdenFLORIDA402025
ApalachicolaFLORIDA392025
ShallotteNORTH-CAROLINA371991
BloxhamFLORIDA362025
Chowan RiverNORTH-CAROLINA352006
WeberGEORGIA342025
NewvilleVIRGINIA342024
Alligator PtFLORIDA332025
TarverGEORGIA312025
Spring HopeNORTH-CAROLINA292025
NixonFLORIDA281986
DibervilleMISSISSIPPI281987
JacksonNORTH-CAROLINA272017
MansfieldTENNESSEE272025
BranchvilleVIRGINIA272024

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