BirdAnalyst
Species · BCR 29 · BBS 2026 Release · 1966–2025

Yellow-throated Vireo In Piedmont

All regionsPiedmontForest birds

Yellow-throated Vireo in Piedmont has surged: up 203% on the route-weighted index since 1968.

+203%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 →
155Routes 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Yellow-throated Vireo has surged in Piedmont: up 203% on the route-weighted index since 1968.

Yellow-throated Vireo In Piedmont Population Forecast

If the recent trend holds, Yellow-throated Vireo in Piedmont is projected to fall about 18% by 2030 — from 2.9 in 2025 to a central estimate of 2.3 (95% range 1.8–2.9). A 5-year backtest shows a typical error of ±13.2%, with 60% of held-out values landing inside the 95% band.

-18%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 →
2.3Projected 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 →
1.8–2.995% 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 →
±13.2%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, Yellow-throated Vireo in Piedmont is projected to fall about 18% by 2030 — from 2.9 in 2025 to a central estimate of 2.3 (95% range 1.8–2.9). A 5-year backtest shows a typical error of ±13.2%, with 60% 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 →
20262.21.72.8
20272.31.72.8
20282.31.82.8
20292.31.82.8
20302.31.82.9

Routes In Piedmont

Routes recording Yellow-throated Vireo in Piedmont.
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 →
BullockNORTH-CAROLINA172025
BrodnaxVIRGINIA162025
Liberty City 2ALABAMA112025
MadonnaMARYLAND102022
Lake AnnaVIRGINIA102025
AppomattoxVIRGINIA82024
Nixburg 2ALABAMA72025
Lincolnton 2GEORGIA72025
WylliesburgVIRGINIA72019
FinchleyVIRGINIA72021
MillervilleALABAMA62025
LanettALABAMA62024
Carrs StationGEORGIA62025
Yates CrossroadsGEORGIA62025
Sharon 2GEORGIA62025
ArcolaNORTH-CAROLINA62025
YoungsvilleNORTH-CAROLINA62025
OsmondNORTH-CAROLINA62025
Big IslandVIRGINIA62025
HallVIRGINIA62025
RinggoldVIRGINIA62025
MoranVIRGINIA62025
RutledgeGEORGIA52025
WashingtonGEORGIA52025
OlneyMARYLAND52025

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