BirdAnalyst
Species · BBS 2025 Release · 1966–2024

Juniper Titmouse

ParidaeForest birdsBaeolophus ridgwayi

Juniper Titmouse has increased: up 34% on the route-weighted index since 1970.

+34%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 →
215RoutesSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
56Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

About the Juniper Titmouse

The Juniper Titmouse (Baeolophus ridgwayi) is a North American member of the Chickadees & Titmice (Paridae). In this analysis it is grouped with the forest birds.

Size
4.5–6 in long (11–15 cm) — a tiny, active songbird (typical for the family)
Habitat
Woodlands and forest edges, including wooded suburbs and parks.
Diet
Insects and spiders gleaned from foliage and bark, with seeds and berries in season.
Range
Recorded on 215 Breeding Bird Survey routes across 9 states, most concentrated in the Southern Rockies / Colorado Plateau.
Family
Paridae · Forest birds

Notable Juniper Titmouse TrendsNotable 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. See the full index history below.

Juniper Titmouse Population Forecast

If the recent trend holds, Juniper Titmouse is projected to rise about 63% by 2029 — from 0.05 in 2024 to a central estimate of 0.09 (95% range 0.06–0.12). A 5-year backtest shows a typical error of ±37.6%, with 60% of held-out values landing inside the 95% band.

+63%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 →
0.09Projected 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 →
0.06–0.1295% 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 →
±37.6%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 is projected to rise about 63% by 2029 — from 0.05 in 2024 to a central estimate of 0.09 (95% range 0.06–0.12). A 5-year backtest shows a typical error of ±37.6%, with 60% 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 →
20250.080.050.12
20260.090.050.12
20270.090.050.12
20280.090.060.12
20290.090.060.12

Where the Juniper Titmouse Is Detected

BBS routes recording Juniper Titmouse, sized by most recent count.

Juniper Titmouse Population Trend by State

Juniper Titmouse population trend by state.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Arizona-57%197036
California-61%197519
Colorado-42%197442
Idaho-82%19914
Nevada-71%199016
New Mexico-13%197036
Oregoninsufficient datan/a4
Utah+0%198655
Wyominginsufficient datan/a3

Juniper Titmouse Population Trend by Region

Bird Conservation Regions are the ecological unit for trends.

Juniper Titmouse population trend by Bird Conservation Region.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Great Basin+47%197549
Northern Rockies-90%19777
Southern Rockies / Colorado Plateau-63%1970119
Shortgrass Prairie-24%19876
Sonoran and Mojave Deserts-37%19973
Sierra Madre Occidental+5%197423
Chihuahuan Desert-15%19745

Juniper Titmouse Conservation Status

Our route-weighted index shows it up about 34% since 1970.

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. Trend is a route-weighted relative-abundance index, not an absolute population.