BirdAnalyst
Species · BCR 34 · BBS 2025 Release · 1966–2024

Gambel's Quail In Sierra Madre Occidental

All regionsSierra Madre OccidentalArid-land birds

Gambel's Quail in Sierra Madre Occidental has edged up: up 15% on the route-weighted index since 1970.

+15%Since 1970
28Routes In Region
56Years

Notable Signals

No notable trend signals for Gambel's Quail in Sierra Madre Occidental. See the full index history below.

Forecast

If the recent trend holds, Gambel's Quail in Sierra Madre Occidental is projected to fall about 29% by 2029 — from 27 in 2024 to a central estimate of 19 (95% range 4.0–34). A 5-year backtest shows a typical error of ±33.1%, with 100% of held-out values landing inside the 95% band.

-29%Change by 2029
19Projected 2029 index
4.0–3495% range
±33.1%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
2025194.234
2026194.134
2027194.134
2028194.134
2029194.034

Routes In Sierra Madre Occidental

Routes recording Gambel's Quail in Sierra Madre Occidental.
Skull ValleyARIZONA1042024
Bartlett ResARIZONA1032024
Carr MtnARIZONA822024
PomereneARIZONA532024
DragoonARIZONA492009
SahuaritaARIZONA482024
CutterARIZONA402014
RedingtonARIZONA332023
Aztec PeakARIZONA321978
San SimonARIZONA312024
RuckerARIZONA262009
PortalARIZONA212024
McnealARIZONA182024
SunizonaARIZONA101997
Forest LakesARIZONA101993
Peña BlancaARIZONA92024
Vicks PeakNEW-MEXICO72024
AmadoARIZONA62023
SprucedaleARIZONA52023
ReserveNEW-MEXICO52023
Sunizona 2ARIZONA42024
Emory PassNEW-MEXICO42024
PatagoniaARIZONA32024
Tonto Vill.ARIZONA32008
PrescottARIZONA22022

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