BirdAnalyst
Species · BCR 9 · BBS 2026 Release · 1966–2025

Broad-tailed Hummingbird In Great Basin

All regionsGreat BasinForest birds

Broad-tailed Hummingbird in Great Basin has surged: up 733% on the route-weighted index since 1974.

+733%Since 1974TrendPercent 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 →
46Routes 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 →
50YearsYears 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 Broad-tailed Hummingbird in Great Basin. See the full index history below.

Broad-tailed Hummingbird In Great Basin Population Forecast

If the recent trend holds, Broad-tailed Hummingbird in Great Basin is projected to rise about 55% by 2030 — from 0.18 in 2025 to a central estimate of 0.27 (95% range 0.04–0.50). A 5-year backtest shows a typical error of ±83.8%, with 100% of held-out values landing inside the 95% band.

+55%Change 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 →
0.27Projected 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 →
0.04–0.5095% 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 →
±83.8%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, Broad-tailed Hummingbird in Great Basin is projected to rise about 55% by 2030 — from 0.18 in 2025 to a central estimate of 0.27 (95% range 0.04–0.50). A 5-year backtest shows a typical error of ±83.8%, with 100% of held-out values landing inside the 95% band.19722030
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 →
20260.260.030.49
20270.270.040.49
20280.270.040.50
20290.270.040.50
20300.270.040.50

Routes In Great Basin

Routes recording Broad-tailed Hummingbird in Great Basin.
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 →
JarbidgeNEVADA322015
Magic MtnIDAHO182025
HyrumUTAH161979
Hardware RanchUTAH152023
AustinNEVADA72018
Fish SpringsUTAH32015
Big PineCALIFORNIA21991
Walker CanNEVADA22013
Majors PlaceNEVADA21999
WillisNEVADA22025
Ruby ValleyNEVADA22000
Humboldt NfNEVADA22006
Oak CityUTAH21998
BerylUTAH22002
GrantsvilleUTAH22018
Pine CreekUTAH22011
NewcastleUTAH22025
Deep SpringsCALIFORNIA12021
BartleCALIFORNIA11977
SquirrelIDAHO12024
HenryIDAHO11973
Silver CityIDAHO12002
BatesIDAHO12009
AlmoIDAHO12017
Daniels ResIDAHO12000

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.