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Species · Colorado · BBS 2026 Release · 1966–2025

Juniper Titmouse Population Trend in Colorado

All statesForest birds

Juniper Titmouse in Colorado has declined: down 37% on the route-weighted index since 1974.

-37%Since 1974TrendPercent 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 →
52YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Juniper Titmouse Trends in ColoradoNotable 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 Juniper Titmouse in Colorado. See the full index history below.

Juniper Titmouse Population Forecast in Colorado

If the recent trend holds, Juniper Titmouse in Colorado is projected to fall about 25% by 2030 — from 0.27 in 2025 to a central estimate of 0.20 (95% range 0.00–0.41). A 5-year backtest shows a typical error of ±26%, with 100% of held-out values landing inside the 95% band.

-25%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 →
0.20Projected 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 →
0.00–0.4195% 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 →
±26%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, Juniper Titmouse in Colorado is projected to fall about 25% by 2030 — from 0.27 in 2025 to a central estimate of 0.20 (95% range 0.00–0.41). A 5-year backtest shows a typical error of ±26%, with 100% of held-out values landing inside the 95% band.19712030
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 →
20260.200.000.41
20270.200.000.41
20280.200.000.41
20290.200.000.41
20300.200.000.41

Juniper Titmouse Survey Routes in Colorado

Routes recording Juniper Titmouse in Colorado.
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 →
Rosevale820252009
Walsenburg820252002
Angora620251998
Animas420041997
Delta320211977
Wray Gulch320251988
Cortez 2320152013
Paonia320211994
Maybell220221972
Falfa220181971
Rio Grnds Rs219921992
Baxter Pass220162015
Pleasant View220212021
Basin220231995
Thomasville219931992
Cokedale220011996
Piceance Basin220032003
Rifle Falls220131999
Radium219981998
Nucla220241999
Westcliffe220162000
Ludlow220112011
Cortez220071989
Mesaverde Np120241997
Douglas Pass120221997

Juniper Titmouse Population Trend in Other States

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