BirdAnalyst
Species · Wisconsin · BBS 2026 Release · 1966–2025

Canada Goose Population Trend in Wisconsin

All statesWaterfowl

Canada Goose in Wisconsin has surged: up 174× on the route-weighted index since 1969.

174×Since 1969TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
97Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Canada Goose Trends in WisconsinNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Canada Goose has surged in Wisconsin: up 174× on the route-weighted index since 1969.

Canada Goose Population Forecast in Wisconsin

If the recent trend holds, Canada Goose in Wisconsin is projected to stay roughly flat through 2030, near 20 (95% range 11–28). A 5-year backtest shows a typical error of ±48.9%, with 60% of held-out values landing inside the 95% band.

+3%Change by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
20Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
11–2895% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±48.9%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Canada Goose in Wisconsin is projected to stay roughly flat through 2030, near 20 (95% range 11–28). A 5-year backtest shows a typical error of ±48.9%, with 60% of held-out values landing inside the 95% band.19662030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
2026189.627
20271910.027
2028191028
2029191128
2030201128

Canada Goose Survey Routes in Wisconsin

Routes recording Canada Goose in Wisconsin.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Kiel45020221998
Rolling Pr40420251970
Cavour17020252000
Loraine12720211974
Prairie Du Chien12720252000
Manawa11520251981
Omro 210420252002
Cochrane10020251976
Annaton9920252003
Wis Rapids9020231969
Land O' Lakes 28020222022
Phillips7420241983
River Falls5820251998
Gresham5120252001
Omro4620011970
Eden4520251986
Casco4320231984
Union Twp4220241966
Rib Lake4120251997
Brownsville4020211994
N Andover4020251986
Mukwonago3420042001
Clintonville3120251986
Buena Vista2520232002
Stevens Pt2320231985

Canada Goose Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.