BirdAnalyst
Species · BCR 30 · BBS 2025 Release · 1966–2024

Hooded Warbler In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastForest birds

Hooded Warbler in New England / Mid-Atlantic Coast has surged: up 209% on the route-weighted index since 1968.

+209%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 →
75Routes 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 →
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 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 New England / Mid-Atlantic Coast: up 209% on the route-weighted index since 1968.

Hooded Warbler In New England / Mid-Atlantic Coast Population Forecast

If the recent trend holds, Hooded Warbler in New England / Mid-Atlantic Coast is projected to rise about 59% by 2029 — from 0.78 in 2024 to a central estimate of 1.2 (95% range 0.76–1.7). A 5-year backtest shows a typical error of ±77.4%, with 0% of held-out values landing inside the 95% band.

+59%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 →
1.2Projected 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 →
0.76–1.795% 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 →
±77.4%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 New England / Mid-Atlantic Coast is projected to rise about 59% by 2029 — from 0.78 in 2024 to a central estimate of 1.2 (95% range 0.76–1.7). A 5-year backtest shows a typical error of ±77.4%, with 0% 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 →
20251.20.691.6
20261.20.711.7
20271.20.721.7
20281.20.741.7
20291.20.761.7

Routes In New England / Mid-Atlantic Coast

Routes recording Hooded Warbler in New England / Mid-Atlantic Coast.
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 →
TruhartVIRGINIA202024
BrandonVIRGINIA92024
WalkersVIRGINIA72023
Island CreekMARYLAND62024
Pt RepublicMARYLAND41989
La PlataMARYLAND42009
HughesvilleMARYLAND42022
Golden HillMARYLAND41969
UncasvilleCONNECTICUT32024
No WoodburyCONNECTICUT32024
CheltenhamMARYLAND32003
Pr FrederickMARYLAND32023
AlbionNEW-JERSEY31992
White StoneVIRGINIA32024
SharpsVIRGINIA32024
WarrenCONNECTICUT22005
Long HillCONNECTICUT22016
PomonkeyMARYLAND22024
PomfretMARYLAND22023
NewarkMARYLAND21998
BerlinMARYLAND22011
GreenwichNEW-JERSEY21974
PomonaNEW-JERSEY22024
PurdyNEW-YORK21994
GloucesterVIRGINIA22024

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