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Species · Wisconsin · BBS 2026 Release · 1966–2025

Pine Siskin Population Trend in Wisconsin

All statesForest birds

Pine Siskin in Wisconsin has collapsed: down 82% on the route-weighted index since 1969.

-82%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 →
43Routes 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 →
51YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Pine Siskin 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 declinecomputed 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 →

Pine Siskin has collapsed in Wisconsin: down 82% on the route-weighted index since 1969.

Pine Siskin Population Forecast in Wisconsin

If the recent trend holds, Pine Siskin in Wisconsin is projected to stay roughly flat through 2030, near 0.10 (95% range 0.00–0.52). A 5-year backtest shows a typical error of ±420.6%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.10Projected 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 →
0.00–0.5295% 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 →
±420.6%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, Pine Siskin in Wisconsin is projected to stay roughly flat through 2030, near 0.10 (95% range 0.00–0.52). A 5-year backtest shows a typical error of ±420.6%, with 100% 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 →
20260.100.000.52
20270.100.000.52
20280.100.000.52
20290.100.000.52
20300.100.000.52

Pine Siskin Survey Routes in Wisconsin

Routes recording Pine Siskin 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 →
Phillips2119951988
Casco1619881988
Amnicon Falls720012001
Rhinelander420192002
Eagle River320221971
Washington I320181994
Dresser220212012
Irma220181969
Hollister219961993
Cadott220172017
Stratford220162015
Mellen220152012
Cavour220252022
Chaffey120151970
Iron River120251972
Minong119881970
Grand View120181969
Bayfield120191969
Shanagolden120181978
Montreal119861968
Land O Lakes120081969
Union Twp120121973
Loraine119661966
Couderay120131973
Exeland119781978

Pine Siskin Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutidahoiowamainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawyoming

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