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

Pine Siskin Population Trend in Utah

All statesGeneralists

Pine Siskin in Utah has increased: up 36% on the route-weighted index since 1971.

+36%Since 1971TrendPercent 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 →
54Routes 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 →
53YearsYears 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 UtahNotable 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 Utah. See the full index history below.

Pine Siskin Population Forecast in Utah

If the recent trend holds, Pine Siskin in Utah is projected to stay roughly flat through 2029, near 3.9 (95% range 0.00–7.9). A 5-year backtest shows a typical error of ±104%, 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 →
3.9Projected 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 →
0.00–7.995% 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 →
±104%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 Utah is projected to stay roughly flat through 2029, near 3.9 (95% range 0.00–7.9). A 5-year backtest shows a typical error of ±104%, 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 →
20253.90.007.9
20263.90.007.9
20273.90.007.9
20283.90.007.9
20293.90.007.9

Pine Siskin Survey Routes in Utah

Routes recording Pine Siskin in Utah.
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 →
Grizzly Rdge4520241986
La Sal4020001993
Soapstone3120241992
Uintah Nf2319941987
Wasatch Nf2320241988
Navajo Lake2220241968
Skyline Driv1920161986
La Sal 31920242007
Beaver1620241968
La Sal 21520062003
Dixie Nf1520241993
Hite1119861986
Red Spur Mtn.920231997
Fish Lake Nf920241992
Woodruff820242002
Gold Hill820242015
Beck719871970
Moon Lake720031994
Gooseberry720241994
Moon Lake 2620232004
M Warner Res620231995
Heber Mtn.620241996
Logan Canyon520191997
Ferron520192000
Altonah419951977

Pine Siskin Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutidahoiowamainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseevermontvirginiawashingtonwest-virginiawisconsinwyoming

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