BirdAnalyst
Species · BCR 14 · BBS 2026 Release · 1966–2025

Wood Duck In Atlantic Northern Forest

All regionsAtlantic Northern ForestWaterfowl

Wood Duck in Atlantic Northern Forest has increased: up 47% on the route-weighted index since 1968.

+47%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 →
103Routes 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 Wood Duck in Atlantic Northern Forest. See the full index history below.

Wood Duck In Atlantic Northern Forest Population Forecast

If the recent trend holds, Wood Duck in Atlantic Northern Forest is projected to rise about 61% by 2030 — from 0.16 in 2025 to a central estimate of 0.26 (95% range 0.11–0.42). A 5-year backtest shows a typical error of ±47.8%, with 80% of held-out values landing inside the 95% band.

+61%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 →
0.26Projected 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 →
0.11–0.4295% 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 →
±47.8%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, Wood Duck in Atlantic Northern Forest is projected to rise about 61% by 2030 — from 0.16 in 2025 to a central estimate of 0.26 (95% range 0.11–0.42). A 5-year backtest shows a typical error of ±47.8%, with 80% 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 →
20260.250.100.41
20270.260.100.41
20280.260.100.42
20290.260.100.42
20300.260.110.42

Routes In Atlantic Northern Forest

Routes recording Wood Duck in Atlantic Northern Forest.
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 →
ManchesterMAINE101981
SabattisNEW-YORK81967
BiddefordMAINE71993
Wilson MillsMAINE71994
Cummington 2MASSACHUSETTS62021
BrooksMAINE52013
MarlboroVERMONT52025
HarmonyMAINE42019
New HartfordCONNECTICUT32021
WarrenMAINE31988
HancockMAINE32010
SheffieldMASSACHUSETTS32010
New HartfordCONNECTICUT21984
NewcastleMAINE22008
HartfordMAINE21979
East TroyMAINE22021
AshlandMAINE22004
Lake MoxieMAINE22006
N OrangeMASSACHUSETTS22023
ChesterfieldMASSACHUSETTS22010
MontereyMASSACHUSETTS22023
WilmotNEW-HAMPSHIRE22024
Dixvil NotchNEW-HAMPSHIRE21999
HighmarketNEW-YORK22002
WarrensburgNEW-YORK22018

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