BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Green-winged Teal In Great Basin

All regionsGreat BasinWaterfowl

Green-winged Teal in Great Basin has risen sharply: up 69% on the route-weighted index since 1971.

+69%Since 1971
98Routes In Region
54Years

Notable Signals

long arc increasecomputed index

Green-winged Teal has risen sharply in Great Basin: up 69% on the route-weighted index since 1971.

Forecast

If the recent trend holds, Green-winged Teal in Great Basin is projected to rise about 68% by 2029 — from 0.10 in 2024 to a central estimate of 0.17 (95% range 0.00–0.51). A 5-year backtest shows a typical error of ±74.3%, with 100% of held-out values landing inside the 95% band.

+68%Change by 2029
0.17Projected 2029 index
0.00–0.5195% range
±74.3%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
20250.170.000.51
20260.170.000.51
20270.170.000.51
20280.170.000.51
20290.170.000.51

Routes In Great Basin

Routes recording Green-winged Teal in Great Basin.
CallaoUTAH302010
HarringtonWASHINGTON122000
Catlow RimOREGON102023
Dobbin CreekNEVADA82014
NighthawkWASHINGTON82019
Blizzard GapOREGON72004
WapatoWASHINGTON61990
Gardnerville 2NEVADA52024
SnowvilleUTAH52015
ZumwaltOREGON42004
TonasketWASHINGTON42013
Columbia NwrWASHINGTON42021
Cedar HillIDAHO32022
Kyle CanyonIDAHO31998
JosephOREGON32023
Warner VallyOREGON32017
ChinchaloOREGON32014
Gold HillUTAH31999
Bear RiverUTAH32023
Moses CouleeWASHINGTON31997
RavendaleCALIFORNIA22007
DorrisCALIFORNIA22017
MacdoelCALIFORNIA22011
Clear Lk ResCALIFORNIA22004
LeadoreIDAHO22022

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