BirdAnalyst
Species · BCR 12 · BBS 2025 Release · 1966–2024

Common Yellowthroat In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionForest birds

Common Yellowthroat in Boreal Hardwood Transition has increased: up 35% on the route-weighted index since 1968.

+35%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 →
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 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 2029, near 20 (95% range 18–23). A 5-year backtest shows a typical error of ±5.9%, 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 →
20Projected 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 →
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 →
±5.9%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 2029, near 20 (95% range 18–23). A 5-year backtest shows a typical error of ±5.9%, 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 →
2025201723
2026201823
2027201823
2028201823
2029201823

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 →
WaskishMINNESOTA742024
Wigwam BayMINNESOTA672023
GilmanWISCONSIN632024
PickfordMICHIGAN602024
LudeMINNESOTA582023
Sherry LakeMINNESOTA552022
GlendaleMINNESOTA532024
BackusMINNESOTA512024
MahtowaMINNESOTA502023
Mille LacsMINNESOTA482024
BigforkMINNESOTA452024
BayfieldWISCONSIN442024
Amnicon FallsWISCONSIN442024
FlambeauWISCONSIN442024
Pine RiverMINNESOTA432024
DebsMINNESOTA432024
FloodwoodMINNESOTA392024
Weirgor SpringsWISCONSIN392024
BrainerdMINNESOTA382024
ChisholmMINNESOTA362024
GreenbushMINNESOTA352024
Crane LakeMINNESOTA342024
ExelandWISCONSIN342024
CromwellMINNESOTA322024
Rib LakeWISCONSIN322024

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