BirdAnalyst
Species · BCR 12 · BBS 2025 Release · 1966–2024

Blue-winged Teal In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionWaterfowl

Blue-winged Teal in Boreal Hardwood Transition has collapsed: down 93% on the route-weighted index since 1968.

-93%Since 1968
62Routes In Region
55Years

Notable Signals

long arc declinecomputed index

Blue-winged Teal has collapsed in Boreal Hardwood Transition: down 93% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Blue-winged Teal in Boreal Hardwood Transition is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.23). A 5-year backtest shows a typical error of ±88.2%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.00Projected 2029 index
0.00–0.2395% range
±88.2%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
20250.010.000.24
20260.000.000.23
20270.000.000.23
20280.000.000.23
20290.000.000.23

Routes In Boreal Hardwood Transition

Routes recording Blue-winged Teal in Boreal Hardwood Transition.
Union TwpWISCONSIN121987
Seney NwrMICHIGAN42009
Mille LacsMINNESOTA41975
FredericMICHIGAN31993
OntonagonMICHIGAN21985
BootjackMICHIGAN21994
TahquamenonMICHIGAN21978
GilchristMICHIGAN21995
Lake CityMICHIGAN21993
Traverse CtyMICHIGAN21976
PickfordMICHIGAN22007
CromwellMINNESOTA22017
HovlandMINNESOTA21990
Crane LakeMINNESOTA21989
WaskishMINNESOTA22022
BabbittMINNESOTA21994
BigforkMINNESOTA22021
GreenbushMINNESOTA22024
Cass LakeMINNESOTA22005
NebishMINNESOTA22011
Tamarac NwrMINNESOTA22023
CouderayWISCONSIN21980
IrmaWISCONSIN22003
HollisterWISCONSIN22004
Washington IWISCONSIN21989

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