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

Pine Siskin Population Trend in Montana

All statesForest birds

Pine Siskin in Montana has edged down: down 20% on the route-weighted index since 1970.

-20%Since 1970TrendPercent 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 →
66Routes 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 →
57YearsYears 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 MontanaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Pine Siskin in Montana. See the full index history below.

Pine Siskin Population Forecast in Montana

If the recent trend holds, Pine Siskin in Montana is projected to stay roughly flat through 2030, near 5.3 (95% range 0.00–11). A 5-year backtest shows a typical error of ±44.8%, with 100% of held-out values landing inside the 95% band.

-0%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 →
5.3Projected 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 →
0.00–1195% 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 →
±44.8%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 Montana is projected to stay roughly flat through 2030, near 5.3 (95% range 0.00–11). A 5-year backtest shows a typical error of ±44.8%, with 100% of held-out values landing inside the 95% band.19682030
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 →
20265.50.0012
20275.40.0011
20285.40.0011
20295.40.0011
20305.30.0011

Pine Siskin Survey Routes in Montana

Routes recording Pine Siskin in Montana.
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 →
Fish Creek11520241995
Woodman5020251968
Thompson Riv3920241993
Hebgen Lake3620252017
Clinton3320251972
St Regis3220251977
Pryor Mtn.3220251995
Swan Lake3020252015
Red Rock2920251974
Arlee2820251968
Whitefish Lake2820242016
Cramer Creek2520191994
Chestnut2420251968
Logan Pass1920251980
Sula1820241977
Threemile Wa1720251994
Greenoagh 21720112005
Libby Dam1620251979
East Glacier Park1520242015
Painted Rock1520221992
Sunburst1319961996
Victor1020251994
Inside Road920251990
Ninemile920251993
Reed Point820251977

Pine Siskin Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutidahoiowamainemarylandmassachusettsmichiganminnesotanebraskanevadanew-hampshirenew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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