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

Pine Siskin Population Trend in Wyoming

All statesGeneralists

Pine Siskin in Wyoming has edged up: up 23% on the route-weighted index since 1970.

+23%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 →
58Routes 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 →
54YearsYears 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 WyomingNotable 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 Wyoming. See the full index history below.

Pine Siskin Population Forecast in Wyoming

If the recent trend holds, Pine Siskin in Wyoming is projected to stay roughly flat through 2029, near 4.4 (95% range 0.20–8.5). A 5-year backtest shows a typical error of ±27.3%, with 100% of held-out values landing inside the 95% band.

-8%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 →
4.4Projected 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 →
0.20–8.595% 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 →
±27.3%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, Pine Siskin in Wyoming is projected to stay roughly flat through 2029, near 4.4 (95% range 0.20–8.5). A 5-year backtest shows a typical error of ±27.3%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20254.30.178.5
20264.30.188.5
20274.30.188.5
20284.40.198.5
20294.40.208.5

Pine Siskin Survey Routes in Wyoming

Routes recording Pine Siskin in Wyoming.
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 →
Alpine11820241979
Buckskin Mtn9520211981
Mammoth7520241982
Colter Bay 26320242019
Wilson4020241979
Hunter Peak2820241982
Colter Bay1719991968
Meeteetse1420241992
Hayden Val1219861985
Moose1220241976
Crazy Woman1220241979
Soda Lake1220241980
Ryan Park1220231993
Bald Mtn1120221990
Gebo1119801980
Fontenelle1019841984
Fox Park1020242013
Ne Entrance920211982
Sundance820241976
Savery719951989
Moskee720011980
Moran620162002
Mtn View620241990
Horse Creek420241980
Mayoworth419921992

Pine Siskin Population Trend in Other States

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

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