BirdAnalyst
Species · BCR 32 · BBS 2025 Release · 1966–2024

Mountain Quail In Coastal California

All regionsCoastal CaliforniaGeneralists

Mountain Quail in Coastal California has edged up: up 11% on the route-weighted index since 1970.

+11%Since 1970
58Routes In Region
56Years

Notable Signals

No notable trend signals for Mountain Quail in Coastal California. See the full index history below.

Forecast

If the recent trend holds, Mountain Quail in Coastal California is projected to fall about 41% by 2029 — from 2.9 in 2024 to a central estimate of 1.7 (95% range 0.00–4.9). A 5-year backtest shows a typical error of ±84.4%, with 100% of held-out values landing inside the 95% band.

-41%Change by 2029
1.7Projected 2029 index
0.00–4.995% range
±84.4%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
20251.80.005.1
20261.80.005.0
20271.80.005.0
20281.70.004.9
20291.70.004.9

Routes In Coastal California

Routes recording Mountain Quail in Coastal California.
Mt BaldyCALIFORNIA852024
Green ValleyCALIFORNIA432023
Cuyamaca PkCALIFORNIA272024
Bartlett SpsCALIFORNIA232018
Lockwood ValCALIFORNIA222019
Lake HemetCALIFORNIA171986
Yolla BollyCALIFORNIA102024
Lake Hemet 2CALIFORNIA92023
StonyfordCALIFORNIA92018
Cal Hot SpgsCALIFORNIA82019
Mt PinosCALIFORNIA72004
AnzaCALIFORNIA71991
LockwoodCALIFORNIA72023
RumseyCALIFORNIA62008
Big BearCALIFORNIA61982
Elsinore MtnCALIFORNIA62024
VentucopaCALIFORNIA61998
Lake SuccessCALIFORNIA51996
Lake BerryessaCALIFORNIA52023
TehamaCALIFORNIA52022
TomheadCALIFORNIA52011
Cleveland NfCALIFORNIA42016
WoodlandsCALIFORNIA42019
CalpellaCALIFORNIA31986
Oak GroveCALIFORNIA32022

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