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

Blue-winged Teal In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionWaterfowl

Blue-winged Teal in Prairie Hardwood Transition has collapsed: down 82% on the route-weighted index since 1968.

-82%Since 1968
105Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Blue-winged Teal has collapsed in Prairie Hardwood Transition: down 82% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Blue-winged Teal in Prairie Hardwood Transition is projected to fall about 100% by 2029 — from 0.22 in 2024 to a central estimate of 0.00 (95% range 0.00–0.69). A 5-year backtest shows a typical error of ±79.2%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–0.6995% range
±79.2%Backtest error
19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.000.000.69
20260.000.000.69
20270.000.000.69
20280.000.000.69
20290.000.000.69

Routes In Prairie Hardwood Transition

Routes recording Blue-winged Teal in Prairie Hardwood Transition.
HowardsvilleMICHIGAN171985
GlenwoodMINNESOTA122019
ClintonvilleWISCONSIN62008
BeloitWISCONSIN62011
DeckervilleMICHIGAN51987
HudsonWISCONSIN52024
CascoWISCONSIN52023
LawrenceMICHIGAN41983
MontereyMICHIGAN42003
Chippewa Lk.MICHIGAN42011
MinnetonkaMINNESOTA42015
GraytownOHIO41973
BismarkOHIO41980
PardeevilleWISCONSIN41993
HollandWISCONSIN42024
Packertown 2INDIANA32017
St CharlesMICHIGAN31980
JuniataMICHIGAN31991
Sherburne NrMINNESOTA32023
LoraineWISCONSIN32016
TrempealeauWISCONSIN31989
WiotaWISCONSIN32008
VeronaWISCONSIN32009
PackertownINDIANA21968
Indiana DuneINDIANA22024

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