BirdAnalyst
Species · Wisconsin · BBS 2025 Release · 1966–2024

Northern Bobwhite Population Trend in Wisconsin

All statesGrassland birds

Northern Bobwhite in Wisconsin has collapsed: down 96% on the route-weighted index since 1968.

-96%Since 1968
61Routes In State
53Years

Notable Northern Bobwhite Trends in Wisconsin

long arc declinecomputed index

Northern Bobwhite has collapsed in Wisconsin: down 96% on the route-weighted index since 1968.

Northern Bobwhite Population Forecast in Wisconsin

If the recent trend holds, Northern Bobwhite in Wisconsin is projected to fall about 80% by 2029 — from 0.07 in 2024 to a central estimate of 0.01 (95% range 0.00–1.3). A 5-year backtest shows a typical error of ±1136.8%, with 100% of held-out values landing inside the 95% band.

-80%Change by 2029
0.01Projected 2029 index
0.00–1.395% range
±1136.8%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
20250.110.001.4
20260.090.001.3
20270.060.001.3
20280.040.001.3
20290.010.001.3

Northern Bobwhite Survey Routes in Wisconsin

Routes recording Northern Bobwhite in Wisconsin.
Briggsville1220071999
Meridean520121998
Viroqua420071970
Fall River420241967
Esdaile319691966
Hudson219821969
Highland220042000
Rib Lake219781978
Washington I220192011
Saxeville220011969
Clintonville220011993
Kendall220071967
N Freedom220051966
Pardeeville220041967
Princeton220101966
Prairie Du Chien220071998
Dresser119791975
Union Twp119761976
Loraine120082007
Rhinelander119981998
Weyerhauser120181973
Couderay119851985
Gilman120081990
Omro 2120072003
Mcnaughton119971997

Northern Bobwhite Population Trend in Other States

alabamaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawyoming

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