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

Calliope Hummingbird In Northern Rockies

All regionsNorthern RockiesGeneralists

Calliope Hummingbird in Northern Rockies has held roughly steady: down 9% on the route-weighted index since 1970.

-9%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 →
95Routes 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 →
55YearsYears 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 Calliope Hummingbird in Northern Rockies. See the full index history below.

Forecast

If the recent trend holds, Calliope Hummingbird in Northern Rockies is projected to rise about 91% by 2029 — from 0.16 in 2024 to a central estimate of 0.30 (95% range 0.05–0.55). A 5-year backtest shows a typical error of ±93%, with 100% of held-out values landing inside the 95% band.

+91%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 →
0.30Projected 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 →
0.05–0.5595% 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 →
±93%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, Calliope Hummingbird in Northern Rockies is projected to rise about 91% by 2029 — from 0.16 in 2024 to a central estimate of 0.30 (95% range 0.05–0.55). A 5-year backtest shows a typical error of ±93%, with 100% 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 →
20250.300.040.55
20260.300.040.55
20270.300.040.55
20280.300.050.55
20290.300.050.55

Routes In Northern Rockies

Routes recording Calliope Hummingbird 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 →
Red RockMONTANA42023
NewbridgeOREGON42024
Spring LakeWASHINGTON41994
CascadeIDAHO31984
Hells CanyonOREGON32021
Twin LakesWASHINGTON31985
CurlewWASHINGTON32013
L Pend O NwrWASHINGTON32023
NaplesIDAHO22024
MivodenIDAHO22023
SunbeamIDAHO22007
Rochat DivdeIDAHO21993
KalispellMONTANA22024
ClintonMONTANA22024
EllistonMONTANA22023
Fish CreekMONTANA22024
NoxonMONTANA22023
Inside RoadMONTANA22019
LogdellOREGON22022
TroyOREGON22013
UnityOREGON22003
Black Mtn.OREGON22002
LaurierWASHINGTON22022
Deer ParkWASHINGTON22012
MooseWYOMING22016

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