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Species · Wyoming · BBS 2026 Release · 1966–2025

Pine Grosbeak Population Trend in Wyoming

All statesForest birds

Pine Grosbeak in Wyoming has declined: down 35% on the route-weighted index since 1979.

-35%Since 1979TrendPercent 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 →
19Routes 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 →
42YearsYears 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 Grosbeak 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 Grosbeak in Wyoming. See the full index history below.

Pine Grosbeak Population Forecast in Wyoming

If the recent trend holds, Pine Grosbeak in Wyoming is projected to fall about 27% by 2030 — from 0.14 in 2025 to a central estimate of 0.10 (95% range 0.00–0.23). A 5-year backtest shows a typical error of ±28.1%, with 100% of held-out values landing inside the 95% band.

-27%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 →
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 →
0.00–0.2395% 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 →
±28.1%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 Grosbeak in Wyoming is projected to fall about 27% by 2030 — from 0.14 in 2025 to a central estimate of 0.10 (95% range 0.00–0.23). A 5-year backtest shows a typical error of ±28.1%, 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 →
20260.100.000.23
20270.100.000.23
20280.100.000.23
20290.100.000.23
20300.100.000.23

Pine Grosbeak Survey Routes in Wyoming

Routes recording Pine Grosbeak 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 →
Ryan Park1020252011
Bald Mtn720241993
Hunter Peak520091994
Ne Entrance220102007
Horse Creek220222004
Soda Lake220041984
Yellowstone120231991
Prior Flats120252022
Colter Bay119961968
Dubois120131974
Clark120052005
Moose119831983
Colter Bay 2120222022
Buckskin Mtn120251981
Fiddler Lk120251979
Moran120132004
Warbonnet120002000
Fox Park120162000
Savery 2120182009

Pine Grosbeak Population Trend in Other States

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