BirdAnalyst
Species · BBS 2026 Release · 1966–2025

Calliope Hummingbird Population Analysis

TrochilidaeForest birdsSelasphorus calliope

Calliope Hummingbird has risen sharply: up 51% on the route-weighted index since 1970.

+51%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 →
206RoutesSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
57Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

About the Calliope Hummingbird

The Calliope Hummingbird (Selasphorus calliope) is a North American member of the Hummingbirds (Trochilidae). In this analysis it is grouped with the forest birds.

Size
3–5 in long (8–13 cm) — a tiny hovering bird (typical for the family)
Habitat
Woodlands and forest edges, including wooded suburbs and parks.
Diet
Insects and spiders gleaned from foliage and bark, with seeds and berries in season.
Range
Recorded on 206 Breeding Bird Survey routes across 8 states, most concentrated in the Northern Rockies.
Family
Trochilidae · Forest birds

Notable Calliope Hummingbird TrendsNotable 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. See the full index history below.

Calliope Hummingbird Population Forecast

If the recent trend holds, Calliope Hummingbird is projected to stay roughly flat through 2030, near 0.03 (95% range 0.01–0.05). A 5-year backtest shows a typical error of ±116.7%, with 0% of held-out values landing inside the 95% band.

n/aChange 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 →
0.03Projected 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 →
0.01–0.0595% 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 →
±116.7%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 is projected to stay roughly flat through 2030, near 0.03 (95% range 0.01–0.05). A 5-year backtest shows a typical error of ±116.7%, with 0% of held-out values landing inside the 95% band.19682030
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 →
20260.030.010.05
20270.030.010.05
20280.030.010.05
20290.030.010.05
20300.030.010.05

Where the Calliope Hummingbird Is Detected

BBS routes recording Calliope Hummingbird, sized by most recent count.

Calliope Hummingbird Population Trend by State

Calliope Hummingbird population trend by state.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
California-46%197151
Idaho+111%197332
Montana+25%197330
Nevadainsufficient datan/a3
Oregon-49%197138
Utah-59%19977
Washington-79%197032
Wyoming-41%198213

Calliope Hummingbird Population Trend by Region

Bird Conservation Regions are the ecological unit for trends.

Calliope Hummingbird population trend by Bird Conservation Region.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Northern Pacific Rainforest-62%198615
Great Basin-66%197057
Northern Rockies-3%197098
Sierra Nevada-19%197424
Southern Rockies / Colorado Plateau-86%19845
Coastal California-89%19717

Calliope Hummingbird Conservation Status

Our route-weighted index shows it up about 51% since 1970.

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. Trend is a route-weighted relative-abundance index, not an absolute population.