BirdAnalyst
Species · New Mexico · BBS 2025 Release · 1966–2024

Savannah Sparrow Population Trend in New Mexico

All statesGrassland birds

Savannah Sparrow in New Mexico has fallen sharply: down 66% on the route-weighted index since 1992.

-66%Since 1992
10Routes In State
33Years

Notable Savannah Sparrow Trends in New Mexico

long arc declinecomputed index

Savannah Sparrow has fallen sharply in New Mexico: down 66% on the route-weighted index since 1992.

Savannah Sparrow Population Forecast in New Mexico

If the recent trend holds, Savannah Sparrow in New Mexico is projected to fall about 74% by 2029 — from 0.09 in 2024 to a central estimate of 0.02 (95% range 0.00–0.35). A 5-year backtest shows a typical error of ±30.7%, with 100% of held-out values landing inside the 95% band.

-74%Change by 2029
0.02Projected 2029 index
0.00–0.3595% range
±30.7%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
20250.050.000.38
20260.040.000.38
20270.040.000.37
20280.030.000.36
20290.020.000.35

Savannah Sparrow Survey Routes in New Mexico

Routes recording Savannah Sparrow in New Mexico.
Angel Fire1620021992
Angel Fire 2420242005
Maxwell220031996
Rosebud220032001
Torreon120082008
Floyd120111991
Horse Mtn119691969
Stinking Lk.119981992
Sedan119991996
Dulce120212000

Savannah Sparrow Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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