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

Yellow Warbler Population Trend in Wisconsin

All statesForest birds

Yellow Warbler in Wisconsin has risen sharply: up 55% on the route-weighted index since 1968.

+55%Since 1968
98Routes In State
58Years

Notable Yellow Warbler Trends in Wisconsin

long arc increasecomputed index

Yellow Warbler has risen sharply in Wisconsin: up 55% on the route-weighted index since 1968.

Yellow Warbler Population Forecast in Wisconsin

If the recent trend holds, Yellow Warbler in Wisconsin is projected to stay roughly flat through 2029, near 8.2 (95% range 6.5–9.8). A 5-year backtest shows a typical error of ±6.1%, with 100% of held-out values landing inside the 95% band.

-1%Change by 2029
8.2Projected 2029 index
6.5–9.895% range
±6.1%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
20257.96.29.6
20268.06.39.6
20278.06.49.7
20288.16.49.8
20298.26.59.8

Yellow Warbler Survey Routes in Wisconsin

Routes recording Yellow Warbler in Wisconsin.
Gilman4320241966
Cumberland3620241966
Dresser2720241966
Fall River2620241967
Grimms2520211998
Exeland2420241968
Wis Rapids2420231966
Weirgor Springs2420241999
Gilmanton2120241966
Viroqua2120241966
Mather2020231966
Omro2020011966
Paris1720241967
Highland1720241998
Omro 21620242002
Pardeeville1320241967
Eden1320241966
Hebron1320241966
Mukwonago 21320242005
Trempealeau1220241966
Manawa1220241966
N Freedom1220241966
Brownsville1220241966
Buena Vista1220241998
Annaton1220242003

Yellow Warbler Population Trend in Other States

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

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