BirdAnalyst
Species · BCR 16 · BBS 2025 Release · 1966–2024

Fox Sparrow In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

Fox Sparrow in Southern Rockies / Colorado Plateau has surged: up 753% on the route-weighted index since 1972.

+753%Since 1972
66Routes In Region
51Years

Notable Signals

long arc increasecomputed index

Fox Sparrow has surged in Southern Rockies / Colorado Plateau: up 753% on the route-weighted index since 1972.

Forecast

If the recent trend holds, Fox Sparrow in Southern Rockies / Colorado Plateau is projected to stay roughly flat through 2029, near 0.59 (95% range 0.25–0.93). A 5-year backtest shows a typical error of ±65.9%, with 80% of held-out values landing inside the 95% band.

+7%Change by 2029
0.59Projected 2029 index
0.25–0.9395% range
±65.9%Backtest error
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 index95% low95% high
20250.560.220.91
20260.570.230.91
20270.580.230.92
20280.580.240.93
20290.590.250.93

Routes In Southern Rockies / Colorado Plateau

Routes recording Fox Sparrow in Southern Rockies / Colorado Plateau.
TincupCOLORADO132024
Uintah NfUTAH131994
GooseberryUTAH72024
Lost Cr. ResUTAH72015
Dolores RivCOLORADO62024
Weston Pass 2COLORADO62024
Red CliffCOLORADO52024
CastletonCOLORADO52024
Ragged Mtn.COLORADO52019
Logan CanyonUTAH52019
SoapstoneUTAH42024
BufordCOLORADO32022
Lost LakeCOLORADO32024
Fox CreekCOLORADO32011
Weston PassCOLORADO32000
Rifle FallsCOLORADO32021
Heber Mtn.UTAH32024
Fox ParkWYOMING32024
ColonaCOLORADO22012
ParlinCOLORADO22023
Wilson CreekCOLORADO22024
UncompahgreCOLORADO22023
DoylevilleCOLORADO22023
Lake CityCOLORADO22003
Buffalo ParkCOLORADO22023

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