BirdAnalyst
Species · BCR 15 · BBS 2025 Release · 1966–2024

California Quail In Sierra Nevada

All regionsSierra NevadaGeneralists

California Quail in Sierra Nevada has declined: down 47% on the route-weighted index since 1971.

-47%Since 1971
28Routes In Region
55Years

Notable Signals

No notable trend signals for California Quail in Sierra Nevada. See the full index history below.

Forecast

If the recent trend holds, California Quail in Sierra Nevada is projected to rise about 70% by 2029 — from 1.9 in 2024 to a central estimate of 3.3 (95% range 0.83–5.8). A 5-year backtest shows a typical error of ±73.1%, with 100% of held-out values landing inside the 95% band.

+70%Change by 2029
3.3Projected 2029 index
0.83–5.895% range
±73.1%Backtest error
19692029
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
20253.30.785.8
20263.30.795.8
20273.30.805.8
20283.30.815.8
20293.30.835.8

Routes In Sierra Nevada

Routes recording California Quail in Sierra Nevada.
Last ChanceCALIFORNIA252019
WawonaCALIFORNIA192024
Bass LakeCALIFORNIA132019
CoultervilleCALIFORNIA122019
Greenhorn MtCALIFORNIA92008
Butte MeadowCALIFORNIA91990
ChilcootCALIFORNIA62024
Cottage SpgsCALIFORNIA51975
WoodfordsCALIFORNIA52024
KernvilleCALIFORNIA42008
Eagle LakeCALIFORNIA32007
WestvilleCALIFORNIA32006
PaxtonCALIFORNIA32024
Forest HillCALIFORNIA32022
Silver CityCALIFORNIA22013
Kings CanyonCALIFORNIA22016
Meadow ValleyCALIFORNIA22018
Little TruckeeCALIFORNIA22023
JohnsvilleCALIFORNIA12024
Tuolumne GroveCALIFORNIA12010
SattleyCALIFORNIA12024
GeneseeCALIFORNIA12024
Higgins CornCALIFORNIA12024
RivertonCALIFORNIA12001
Hat CreekCALIFORNIA12018

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