BirdAnalyst
Species · BCR 26 · BBS 2026 Release · 1966–2025

Worm-eating Warbler In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyForest birds

Worm-eating Warbler in Mississippi Alluvial Valley has edged up: up 17% on the route-weighted index since 1978.

+17%Since 1978TrendPercent 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 →
8Routes 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 Worm-eating Warbler in Mississippi Alluvial Valley. See the full index history below.

Routes In Mississippi Alluvial Valley

Routes recording Worm-eating Warbler in Mississippi Alluvial Valley.
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 →
Tchula 3MISSISSIPPI22025
DeventerMISSOURI21984
EudoraARKANSAS11978
Crowley'S RidgeARKANSAS12013
BardwellKENTUCKY11967
Tchula 2MISSISSIPPI11993
Warren VickMISSISSIPPI12019
TiptonvilleTENNESSEE12015

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.