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

Tennessee Warbler In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionForest birds

Tennessee Warbler in Prairie Hardwood Transition has declined: down 44% on the route-weighted index since 1996.

-44%Since 1996TrendPercent 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 →
5Routes 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 →
13YearsYears 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 Tennessee Warbler in Prairie Hardwood Transition. See the full index history below.

Routes In Prairie Hardwood Transition

Routes recording Tennessee 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 →
EdwardsMINNESOTA61997
Chippewa Lk.MICHIGAN21997
PrincetonMINNESOTA12023
LoraineWISCONSIN11997
Beaver DamWISCONSIN11993

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