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

Eastern Kingbird In Northern Rockies

All regionsNorthern RockiesAerial insectivores

Eastern Kingbird in Northern Rockies has edged up: up 15% on the route-weighted index since 1970.

+15%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 →
137Routes 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 Eastern Kingbird in Northern Rockies. See the full index history below.

Eastern Kingbird In Northern Rockies Population Forecast

If the recent trend holds, Eastern Kingbird in Northern Rockies is projected to fall about 23% by 2029 — from 1.6 in 2024 to a central estimate of 1.3 (95% range 0.65–1.9). A 5-year backtest shows a typical error of ±23.8%, with 80% of held-out values landing inside the 95% band.

-23%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 →
1.3Projected 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 →
0.65–1.995% 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 →
±23.8%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, Eastern Kingbird in Northern Rockies is projected to fall about 23% by 2029 — from 1.6 in 2024 to a central estimate of 1.3 (95% range 0.65–1.9). A 5-year backtest shows a typical error of ±23.8%, with 80% 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 →
20251.20.641.9
20261.20.651.9
20271.30.651.9
20281.30.651.9
20291.30.651.9

Routes In Northern Rockies

Routes recording Eastern Kingbird 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
KalispellMONTANA182024
Clyde ParkMONTANA182024
SpartaOREGON162001
AugustaMONTANA152024
BoulderMONTANA132024
GlenMONTANA132024
Pablo Res.MONTANA122024
Church HillMONTANA112024
LaurierWASHINGTON112022
OttoWYOMING112024
Green RiverWYOMING101984
Wolf CreekMONTANA92022
CoolinIDAHO82024
Heart ButteMONTANA82024
CodyWYOMING82024
Willow CreekMONTANA71981
MonumentOREGON72024
ChewelahWASHINGTON72021
LysiteWYOMING72024
LaurelMONTANA62022
NinemileMONTANA62024
Willow Creek 2MONTANA62024
MidvaleWYOMING62024
EtheteWYOMING62024

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