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

Broad-tailed Hummingbird In Northern Rockies

All regionsNorthern RockiesGeneralists

Broad-tailed Hummingbird in Northern Rockies has surged: up 544% on the route-weighted index since 1974.

+544%Since 1974
52Routes In Region
51Years

Notable Signals

long arc increasecomputed index

Broad-tailed Hummingbird has surged in Northern Rockies: up 544% on the route-weighted index since 1974.

Forecast

If the recent trend holds, Broad-tailed Hummingbird in Northern Rockies is projected to fall about 39% by 2029 — from 0.47 in 2024 to a central estimate of 0.28 (95% range 0.12–0.45). A 5-year backtest shows a typical error of ±42.6%, with 40% of held-out values landing inside the 95% band.

-39%Change by 2029
0.28Projected 2029 index
0.12–0.4595% range
±42.6%Backtest error
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 index95% low95% high
20250.270.100.43
20260.270.110.44
20270.280.110.44
20280.280.120.45
20290.280.120.45

Routes In Northern Rockies

Routes recording Broad-tailed Hummingbird in Northern Rockies.
WilsonWYOMING232024
AlpineWYOMING122024
MooseWYOMING62024
WoodruffUTAH52024
SaveryWYOMING51995
RiversideWYOMING32024
Hunter PeakWYOMING32024
Crazy WomanWYOMING32024
Buckskin MtnWYOMING32021
Savery 2WYOMING32024
Colter Bay 2WYOMING32024
ChallisIDAHO22022
Neponset ResUTAH21999
Crawford MtsUTAH22023
Green RiverWYOMING21978
MaybellCOLORADO11971
Great DivideCOLORADO12011
Browns ParkCOLORADO11995
LayCOLORADO12001
Cape HornIDAHO11990
CentervilleIDAHO11985
AlturasIDAHO11985
Libby DamMONTANA11987
St RegisMONTANA12002
EllistonMONTANA11991

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