BirdAnalyst
Species · BCR 11 · BBS 2025 Release · 1966–2024

Nashville Warbler In Prairie Potholes

All regionsPrairie PotholesForest birds

Nashville Warbler in Prairie Potholes has fallen sharply: down 54% on the route-weighted index since 1990.

-54%Since 1990TrendPercent 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 RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
16YearsYears 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 →

No notable trend signals for Nashville Warbler in Prairie Potholes. See the full index history below.

Routes In Prairie Potholes

Routes recording Nashville Warbler in Prairie Potholes.
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 →
OkleeMINNESOTA21991
WylieMINNESOTA11990
ErieMINNESOTA12013
GryglaMINNESOTA12009
BadgerMINNESOTA12015
NashNORTH-DAKOTA11994

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