BirdAnalyst
Species · Colorado · BBS 2025 Release · 1966–2024

Lazuli Bunting Population Trend in Colorado

All statesGeneralists

Lazuli Bunting in Colorado has surged: up 340% on the route-weighted index since 1971.

+340%Since 1971
81Routes In State
55Years

Notable Lazuli Bunting Trends in Colorado

long arc increasecomputed index

Lazuli Bunting has surged in Colorado: up 340% on the route-weighted index since 1971.

Lazuli Bunting Population Forecast in Colorado

If the recent trend holds, Lazuli Bunting in Colorado is projected to fall about 24% by 2029 — from 1.2 in 2024 to a central estimate of 0.92 (95% range 0.09–1.8). A 5-year backtest shows a typical error of ±23.5%, with 100% of held-out values landing inside the 95% band.

-24%Change by 2029
0.92Projected 2029 index
0.09–1.895% range
±23.5%Backtest error
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 index95% low95% high
20250.940.101.8
20260.930.101.8
20270.930.091.8
20280.930.091.8
20290.920.091.8

Lazuli Bunting Survey Routes in Colorado

Routes recording Lazuli Bunting in Colorado.
Douglas Pass4220241982
De Beque2220241992
Yampa2120231972
Baxter Pass1820241994
Mesaverde Np820232003
Walsenburg720231996
Willow Peak520211988
Nucla520242000
Stillwater Pass 2520242022
Pagosa Spgs419821971
Wilson Creek420241990
Gribbles Prk420242007
Aspen320241979
Comanche Pk320241994
Ludlow320111998
Animas 2320172005
Cheesman Lk220241971
Colona219961972
Castleton220131988
Crowley220222022
Lake City220021999
Trinchera220191996
Thomasville220181997
Wet Mtns.219981994
Cokedale220241995

Lazuli Bunting Population Trend in Other States

arizonacaliforniaidahokansasmontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatexasutahwashingtonwyoming

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