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Species · Maine · BBS 2026 Release · 1966–2025

Yellow-bellied Sapsucker Population Trend in Maine

All statesForest birds

Yellow-bellied Sapsucker in Maine has declined: down 31% on the route-weighted index since 1968.

-31%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 →
76Routes In StateSurvey 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 Yellow-bellied Sapsucker Trends in MaineNotable 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 Yellow-bellied Sapsucker in Maine. See the full index history below.

Yellow-bellied Sapsucker Population Forecast in Maine

If the recent trend holds, Yellow-bellied Sapsucker in Maine is projected to rise about 104% by 2030 — from 2.6 in 2025 to a central estimate of 5.2 (95% range 2.4–8.0). A 5-year backtest shows a typical error of ±45.7%, with 80% of held-out values landing inside the 95% band.

+104%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 →
5.2Projected 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 →
2.4–8.095% 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 →
±45.7%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-bellied Sapsucker in Maine is projected to rise about 104% by 2030 — from 2.6 in 2025 to a central estimate of 5.2 (95% range 2.4–8.0). A 5-year backtest shows a typical error of ±45.7%, 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 →
20265.12.37.9
20275.12.37.9
20285.12.37.9
20295.22.48.0
20305.22.48.0

Yellow-bellied Sapsucker Survey Routes in Maine

Routes recording Yellow-bellied Sapsucker in Maine.
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 →
Pillsbury Pd3519681968
Priestly Br.3320131995
Baker Lake 22920132010
Seboomook Lk2320141974
Waite2119771977
Nesowadnehun1820211990
Northfield1619811976
Forest Sta1620001966
Andover1420212010
Brooks1120211977
Hermon1120211966
Horse Mtn1120111983
Charleston1020211975
Washburn920051980
Ashland920081980
Clayton Lake 2920132010
Weeks Brook820161995
Moose River720081983
Hudson720161973
Clayton Lake720081977
Baker Lake720091994
Cornville720252019
South Arm620131975
East Troy620211972
Ludlow619981968

Yellow-bellied Sapsucker Population Trend in Other States

alaskaconnecticutillinoisiowamarylandmassachusettsmichiganminnesotanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiopennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawest-virginiawisconsin

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