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Species · Wisconsin · BBS 2025 Release · 1966–2024

Yellow-throated Vireo Population Trend in Wisconsin

All statesForest birds

Yellow-throated Vireo in Wisconsin has surged: up 103% on the route-weighted index since 1968.

+103%Since 1968TrendPercent 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 →
96Routes 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 Yellow-throated Vireo 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 →

Yellow-throated Vireo has surged in Wisconsin: up 103% on the route-weighted index since 1968.

Yellow-throated Vireo Population Forecast in Wisconsin

If the recent trend holds, Yellow-throated Vireo in Wisconsin is projected to rise about 38% by 2029 — from 1.3 in 2024 to a central estimate of 1.8 (95% range 1.4–2.3). A 5-year backtest shows a typical error of ±12.3%, with 80% of held-out values landing inside the 95% band.

+38%Change by 2029TrendPercent 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 →
1.8Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
1.4–2.395% 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 →
±12.3%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, Yellow-throated Vireo in Wisconsin is projected to rise about 38% by 2029 — from 1.3 in 2024 to a central estimate of 1.8 (95% range 1.4–2.3). A 5-year backtest shows a typical error of ±12.3%, with 80% of held-out values landing inside the 95% band.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 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 →
20251.81.32.2
20261.81.42.2
20271.81.42.2
20281.81.42.3
20291.81.42.3

Yellow-throated Vireo Survey Routes in Wisconsin

Routes recording Yellow-throated Vireo 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 →
Pardeeville720241983
Cumberland620241966
Couderay620191969
Wausaukee620241980
Amberg520241980
Trempealeau520241966
Cadott520241966
Princeton520241966
Gresham520241998
Union Twp420241966
Weyerhauser420231966
Exeland420241968
Mather420231966
Newburg Crns420231967
Bashaw420231999
Weirgor Springs420242004
River Falls420241999
Highland420241998
Dresser320241967
Gilman320181970
Rib Lake320231966
Merrill320231966
Stevens Pt320231966
Elderon320231970
Saxeville320241972

Yellow-throated Vireo Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginia

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