BirdAnalyst
Species · Maine · BBS 2025 Release · 1966–2024

Common Yellowthroat Population Trend in Maine

All statesForest birds

Common Yellowthroat in Maine has edged down: down 16% on the route-weighted index since 1968.

-16%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 →
78Routes 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 Common Yellowthroat 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 Common Yellowthroat in Maine. See the full index history below.

Common Yellowthroat Population Forecast in Maine

If the recent trend holds, Common Yellowthroat in Maine is projected to stay roughly flat through 2029, near 14 (95% range 5.6–23). A 5-year backtest shows a typical error of ±7.8%, with 100% of held-out values landing inside the 95% band.

-5%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 →
14Projected 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 →
5.6–2395% 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 →
±7.8%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, Common Yellowthroat in Maine is projected to stay roughly flat through 2029, near 14 (95% range 5.6–23). A 5-year backtest shows a typical error of ±7.8%, 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 →
2025156.223
2026156.023
2027145.923
2028145.823
2029145.623

Common Yellowthroat Survey Routes in Maine

Routes recording Common Yellowthroat 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 →
Northfield5019811976
Brooks4520191977
Hudson4020161973
Washburn3820051979
Hermon3720191966
Cornville3720242012
Harmony3620241967
Ft Fairfield3520051993
Benton3419801971
Charleston3220191975
Deblois2920071966
Manchester2819951971
East Troy2720191972
Ludlow2719981968
Warren2619901973
Forest Sta2620001966
Carrying Pl2520241979
Boundary2520161993
Eastbrook2420241971
Ashland2220081980
Aurora2120211975
Turner 22120242011
Benedicta2020221976
Medway2020181976
Turner1920101972

Common Yellowthroat Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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