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Species · BCR 10 · BBS 2025 Release · 1966–2024

Common Yellowthroat In Northern Rockies

All regionsNorthern RockiesForest birds

Common Yellowthroat in Northern Rockies has edged down: down 21% on the route-weighted index since 1970.

-21%Since 1970TrendPercent 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 →
151Routes 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 →
56YearsYears 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 Northern Rockies. See the full index history below.

Common Yellowthroat In Northern Rockies Population Forecast

If the recent trend holds, Common Yellowthroat in Northern Rockies is projected to fall about 42% by 2029 — from 1.9 in 2024 to a central estimate of 1.1 (95% range 0.13–2.1). A 5-year backtest shows a typical error of ±50.2%, with 40% of held-out values landing inside the 95% band.

-42%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 →
1.1Projected 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 →
0.13–2.195% 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 →
±50.2%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 Northern Rockies is projected to fall about 42% by 2029 — from 1.9 in 2024 to a central estimate of 1.1 (95% range 0.13–2.1). A 5-year backtest shows a typical error of ±50.2%, with 40% of held-out values landing inside the 95% band.19682029
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 →
20251.20.202.1
20261.10.182.1
20271.10.172.1
20281.10.152.1
20291.10.132.1

Routes In Northern Rockies

Routes recording Common Yellowthroat in Northern Rockies.
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 →
BridgeportOREGON212022
NaplesIDAHO142024
Pablo Res.MONTANA132024
KalispellMONTANA122024
SulaMONTANA122024
ChestnutMONTANA122024
Red RockMONTANA112024
RaynesfordMONTANA112024
East Glacier ParkMONTANA92024
Libby DamMONTANA82024
Twin BridgesMONTANA81976
Clyde ParkMONTANA82024
ClarkWYOMING82024
CoolinIDAHO72024
BeaverheadMONTANA72024
Seedskadee 2WYOMING72024
GlenMONTANA62024
Muddy CreekMONTANA62015
RandolphUTAH62024
EllistonMONTANA52024
NinemileMONTANA52024
NoxonMONTANA52022
Freeman CreekMONTANA52016
Fort LoganMONTANA52024
TwickenhamOREGON52024

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