BirdAnalyst
Species · BCR 19 · BBS 2025 Release · 1966–2024

Green-winged Teal In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieWaterfowl

Green-winged Teal in Central Mixed Grass Prairie has fallen sharply: down 61% on the route-weighted index since 1971.

-61%Since 1971
13Routes In Region
35Years

Notable Signals

long arc declinecomputed index

Green-winged Teal has fallen sharply in Central Mixed Grass Prairie: down 61% on the route-weighted index since 1971.

Forecast

If the recent trend holds, Green-winged Teal in Central Mixed Grass Prairie is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.16). A 5-year backtest shows a typical error of ±76.8%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.01Projected 2029 index
0.00–0.1695% range
±76.8%Backtest error
19682029
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
20250.010.000.17
20260.010.000.16
20270.010.000.16
20280.010.000.16
20290.010.000.16

Routes In Central Mixed Grass Prairie

Routes recording Green-winged Teal in Central Mixed Grass Prairie.
AlbertKANSAS101987
St JohnKANSAS22017
StrattonNEBRASKA22015
GordonNEBRASKA22018
Crescent LkNEBRASKA22016
BrownleeNEBRASKA22002
MisslerKANSAS11980
HopewellKANSAS12009
Swan LakeNEBRASKA11997
Piester LakeNEBRASKA12017
KennedyNEBRASKA12024
TableNEBRASKA12016
Wheeler CoNEBRASKA12024

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