BirdAnalyst
Species · BCR 16 · BBS 2026 Release · 1966–2025

Juniper Titmouse In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauForest birds

Juniper Titmouse in Southern Rockies / Colorado Plateau has fallen sharply: down 67% on the route-weighted index since 1970.

-67%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 →
123Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Juniper Titmouse has fallen sharply in Southern Rockies / Colorado Plateau: down 67% on the route-weighted index since 1970.

Juniper Titmouse In Southern Rockies / Colorado Plateau Population Forecast

If the recent trend holds, Juniper Titmouse in Southern Rockies / Colorado Plateau is projected to fall about 14% by 2030 — from 0.68 in 2025 to a central estimate of 0.58 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±17.1%, with 100% of held-out values landing inside the 95% band.

-14%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 →
0.58Projected 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 →
0.00–1.495% 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 →
±17.1%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, Juniper Titmouse in Southern Rockies / Colorado Plateau is projected to fall about 14% by 2030 — from 0.68 in 2025 to a central estimate of 0.58 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±17.1%, 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 →
20260.630.001.5
20270.620.001.5
20280.610.001.4
20290.600.001.4
20300.580.001.4

Routes In Southern Rockies / Colorado Plateau

Routes recording Juniper Titmouse in Southern Rockies / Colorado Plateau.
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 →
ZeniffARIZONA351984
La CienegaNEW-MEXICO282022
PecosNEW-MEXICO262017
Navajo LakeUTAH121969
Claunch 2NEW-MEXICO92025
YampaiARIZONA81976
RosevaleCOLORADO82025
WalsenburgCOLORADO82025
Black MesaARIZONA71995
Rose WellsARIZONA71969
ClaunchNEW-MEXICO72000
Glen CanyonUTAH72025
ShivwitzUTAH72025
AngoraCOLORADO62025
Bryce CanyonUTAH61993
Fence LakeNEW-MEXICO52025
Horse MtnNEW-MEXICO52023
Salt Lake 2NEW-MEXICO52025
Moquith MtnUTAH52025
La Sal 2UTAH52006
Bullfrog BayUTAH52008
Cow SpringsARIZONA42022
AnimasCOLORADO42004
CanyonlandsUTAH42024
FayetteUTAH42025

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