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

Hooded Warbler In Piedmont

All regionsPiedmontForest birds

Hooded Warbler in Piedmont has surged: up 165% on the route-weighted index since 1968.

+165%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 →
122Routes 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 →

Hooded Warbler has surged in Piedmont: up 165% on the route-weighted index since 1968.

Hooded Warbler In Piedmont Population Forecast

If the recent trend holds, Hooded Warbler in Piedmont is projected to stay roughly flat through 2030, near 2.0 (95% range 1.5–2.6). A 5-year backtest shows a typical error of ±12.8%, with 100% of held-out values landing inside the 95% band.

-9%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 →
2.0Projected 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 →
1.5–2.695% 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 →
±12.8%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 Piedmont is projected to stay roughly flat through 2030, near 2.0 (95% range 1.5–2.6). A 5-year backtest shows a typical error of ±12.8%, 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 →
20261.91.42.5
20272.01.42.5
20282.01.42.5
20292.01.52.5
20302.01.52.6

Routes In Piedmont

Routes recording Hooded Warbler 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 →
Liberty City 2ALABAMA272025
Nixburg 2ALABAMA222025
MillervilleALABAMA162025
Yates CrossroadsGEORGIA142025
WedoweeALABAMA132023
Pw Forest PkVIRGINIA122009
JulietteGEORGIA92025
GuptonNORTH-CAROLINA92025
Uwharrie NfNORTH-CAROLINA92001
Liberty CityALABAMA82011
ArcolaNORTH-CAROLINA72025
YoungsvilleNORTH-CAROLINA72025
LanettALABAMA62024
RutledgeGEORGIA62025
SalemSOUTH-CAROLINA62025
ElamsvilleVIRGINIA62016
FairplayGEORGIA51966
RolandGEORGIA52025
Carrs StationGEORGIA52025
Ft Pickett NVIRGINIA51995
Stoney Point 2GEORGIA42025
BiscoeNORTH-CAROLINA42025
MonticelloNORTH-CAROLINA42008
Mount AiryNORTH-CAROLINA42025
WhitmireSOUTH-CAROLINA42024

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