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

White-crowned Sparrow Population Trend in New Mexico

All statesGeneralists

White-crowned Sparrow in New Mexico has fallen sharply: down 67% on the route-weighted index since 1983.

-67%Since 1983TrendPercent 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 →
6Routes 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 →
17YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable White-crowned Sparrow Trends in New MexicoNotable 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 declinecomputed 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 →

White-crowned Sparrow has fallen sharply in New Mexico: down 67% on the route-weighted index since 1983.

White-crowned Sparrow Survey Routes in New Mexico

Routes recording White-crowned Sparrow in New Mexico.
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 →
Mountainair320042004
Angel Fire320021992
Cebolla219971981
Mesilla119931993
Angel Fire 2120242024
Gallinas120242024

White-crowned Sparrow Population Trend in Other States

alaskacaliforniacoloradoidahomontananevadaoregonutahwashingtonwyoming

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