BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Prairie Warbler In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionForest birds

Prairie Warbler in Prairie Hardwood Transition has held roughly steady: up 9% on the route-weighted index since 1981.

+9%Since 1981TrendPercent 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 →
9Routes 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 →
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 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 Prairie Warbler in Prairie Hardwood Transition. See the full index history below.

Routes In Prairie Hardwood Transition

Routes recording Prairie Warbler in Prairie Hardwood Transition.
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 →
N FreedomWISCONSIN41997
KnoxINDIANA11989
EllisINDIANA11982
Indiana DuneINDIANA12012
ScottvilleMICHIGAN11981
Big Blue LkMICHIGAN11997
MontereyMICHIGAN11988
Allegan WmaMICHIGAN12012
Barry S.G.A.MICHIGAN12008

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