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Species · Maine · BBS 2025 Release · 1966–2024

Yellow-bellied Sapsucker Population Trend in Maine

All statesForest birds

Yellow-bellied Sapsucker in Maine has edged down: down 19% on the route-weighted index since 1968.

-19%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 StateSurvey 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 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 22% by 2029 — from 4.4 in 2024 to a central estimate of 5.3 (95% range 2.6–8.1). A 5-year backtest shows a typical error of ±23.4%, with 100% of held-out values landing inside the 95% band.

+22%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 →
5.3Projected 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 →
2.6–8.195% 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 →
±23.4%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, Yellow-bellied Sapsucker in Maine is projected to rise about 22% by 2029 — from 4.4 in 2024 to a central estimate of 5.3 (95% range 2.6–8.1). A 5-year backtest shows a typical error of ±23.4%, with 100% 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 →
20255.22.47.9
20265.22.58.0
20275.22.58.0
20285.32.58.0
20295.32.68.1

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
Brooks1720191977
Northfield1619811976
Charleston1620191975
Forest Sta1620001966
Andover1420212010
Hancock1320241974
Carrying Pl1320241980
Horse Mtn1120111983
Wytopitlock1019981976
Washburn920051980
Ashland920081980
Clayton Lake 2920132010
Eastbrook820241971
Weeks Brook820161995
Brownfield 2820242011
East Troy720191972
Hermon720191966
Moose River720081983
Hudson720161973

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 2026-05-22.