BirdAnalyst
Species · BCR 24 · BBS 2025 Release · 1966–2024

Blue-winged Teal In Central Hardwoods

All regionsCentral HardwoodsWaterfowl

Blue-winged Teal in Central Hardwoods has fallen sharply: down 68% on the route-weighted index since 1973.

-68%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 →
12Routes 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 →
15YearsYears 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 Blue-winged Teal in Central Hardwoods. See the full index history below.

Routes In Central Hardwoods

Routes recording Blue-winged Teal in Central Hardwoods.
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 →
ClementineMISSOURI51976
PulaskiILLINOIS21984
BremenILLINOIS21973
BrazilINDIANA21978
EastviewKENTUCKY21989
CascadeMISSOURI21981
ColcordOKLAHOMA21997
CollinwoodTENNESSEE21972
YorkILLINOIS12002
KeysburgKENTUCKY11983
GraydonMISSOURI11973
GlenTENNESSEE11998

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