BirdAnalyst
Species · BCR 26 · BBS 2025 Release · 1966–2024

Blue-winged Teal In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyWaterfowl

Blue-winged Teal in Mississippi Alluvial Valley has fallen sharply: down 72% on the route-weighted index since 1973.

-72%Since 1973TrendPercent 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 →
13Routes 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 →

long arc declinecomputed 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 →

Blue-winged Teal has fallen sharply in Mississippi Alluvial Valley: down 72% on the route-weighted index since 1973.

Routes In Mississippi Alluvial Valley

Routes recording Blue-winged Teal 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 →
DeventerMISSOURI71973
EnglandARKANSAS62013
MayflowerLOUISIANA41975
WilsonARKANSAS31995
SaffellARKANSAS22000
Port AllenLOUISIANA22012
PawpawTENNESSEE22010
West TylerARKANSAS11983
South BendARKANSAS11978
AugustaARKANSAS11994
MaynardARKANSAS12008
DundeeMISSISSIPPI11973
TiptonvilleTENNESSEE11993

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