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Species · BCR 12 · BBS 2026 Release · 1966–2025

Common Yellowthroat In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionForest birds

Common Yellowthroat in Boreal Hardwood Transition has increased: up 40% on the route-weighted index since 1968.

+40%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 →
127Routes 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 Common Yellowthroat in Boreal Hardwood Transition. See the full index history below.

Common Yellowthroat In Boreal Hardwood Transition Population Forecast

If the recent trend holds, Common Yellowthroat in Boreal Hardwood Transition is projected to stay roughly flat through 2030, near 21 (95% range 18–23). A 5-year backtest shows a typical error of ±5.2%, with 100% of held-out values landing inside the 95% band.

-1%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 →
21Projected 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 →
18–2395% 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 →
±5.2%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 Boreal Hardwood Transition is projected to stay roughly flat through 2030, near 21 (95% range 18–23). A 5-year backtest shows a typical error of ±5.2%, with 100% 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 →
2026201823
2027201823
2028201823
2029201823
2030211823

Routes In Boreal Hardwood Transition

Routes recording Common Yellowthroat in Boreal Hardwood Transition.
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 →
Wigwam BayMINNESOTA672023
GilmanWISCONSIN632025
DebsMINNESOTA622025
Sherry LakeMINNESOTA552022
WaskishMINNESOTA512025
MahtowaMINNESOTA502023
Amnicon FallsWISCONSIN502025
Weirgor SpringsWISCONSIN492025
Mille LacsMINNESOTA482024
FloodwoodMINNESOTA472025
LudeMINNESOTA462025
Iron RiverWISCONSIN452025
PickfordMICHIGAN432025
Pine RiverMINNESOTA432025
BashawWISCONSIN412025
BayfieldWISCONSIN392025
BackusMINNESOTA382025
BrainerdMINNESOTA382024
PhillipsWISCONSIN382025
Rib LakeWISCONSIN372025
ChisholmMINNESOTA362024
Seney NwrMICHIGAN352025
NebishMINNESOTA352025
McgregorMINNESOTA322025
BagleyMINNESOTA302006

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