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Species · Wyoming · BBS 2025 Release · 1966–2024

Broad-tailed Hummingbird Population Trend in Wyoming

All statesGeneralists

Broad-tailed Hummingbird in Wyoming has surged: up 517% on the route-weighted index since 1977.

+517%Since 1977TrendPercent 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 →
41Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
49YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Broad-tailed Hummingbird Trends in WyomingNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Broad-tailed Hummingbird has surged in Wyoming: up 517% on the route-weighted index since 1977.

Broad-tailed Hummingbird Population Forecast in Wyoming

If the recent trend holds, Broad-tailed Hummingbird in Wyoming is projected to fall about 30% by 2029 — from 1.1 in 2024 to a central estimate of 0.75 (95% range 0.40–1.1). A 5-year backtest shows a typical error of ±31.2%, with 60% of held-out values landing inside the 95% band.

-30%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 →
0.75Projected 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 →
0.40–1.195% 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 →
±31.2%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, Broad-tailed Hummingbird in Wyoming is projected to fall about 30% by 2029 — from 1.1 in 2024 to a central estimate of 0.75 (95% range 0.40–1.1). A 5-year backtest shows a typical error of ±31.2%, with 60% of held-out values landing inside the 95% band.19692029
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 →
20250.710.351.1
20260.720.371.1
20270.730.381.1
20280.740.391.1
20290.750.401.1

Broad-tailed Hummingbird Survey Routes in Wyoming

Routes recording Broad-tailed Hummingbird in Wyoming.
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 →
Wilson2320241979
Fox Park1720241992
Alpine1220241979
Warbonnet920241990
Moose620241976
Fletcher Pk620241981
Savery519951989
Ryan Park520232011
Buford420241993
Riverside320241969
Hunter Peak320242024
Crazy Woman320242008
Colter Bay 2320242019
Buckskin Mtn320211981
Savery 2320242007
Green River219781978
Ne Entrance120182018
Cody120051999
Prior Flats120231991
Sundance120152015
Colter Bay119971969
Dubois120161976
Brookhurst120171982
Mckinnon119861986
Yoder119901990

Broad-tailed Hummingbird Population Trend in Other States

arizonacaliforniacoloradoidahomontananevadanew-mexicosouth-dakotatexasutah

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