BirdAnalyst
Species · BCR 17 · BBS 2025 Release · 1966–2024

White-crowned Sparrow In Badlands and Prairies

All regionsBadlands and PrairiesGeneralists

White-crowned Sparrow in Badlands and Prairies has surged: up 132% on the route-weighted index since 1982.

+132%Since 1982TrendPercent 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 →
7Routes 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 →
14YearsYears 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 →

long arc increasecomputed 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 surged in Badlands and Prairies: up 132% on the route-weighted index since 1982.

Routes In Badlands and Prairies

Routes recording White-crowned Sparrow in Badlands and Prairies.
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 →
Maynard CouleeMONTANA122024
Soda WellWYOMING31979
LuskWYOMING31983
PowdervilleMONTANA21968
ArvadaWYOMING22010
FlatwillowMONTANA11995
Miles CityMONTANA12015

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