BirdAnalyst
Species · Texas · BBS 2025 Release · 1966–2024

Gambel's Quail Population Trend in Texas

All statesArid-land birds

Gambel's Quail in Texas has surged: up 34× on the route-weighted index since 1994.

34×Since 1994
8Routes In State
32Years

Notable Gambel's Quail Trends in Texas

long arc increasecomputed index

Gambel's Quail has surged in Texas: up 34× on the route-weighted index since 1994.

Gambel's Quail Population Forecast in Texas

If the recent trend holds, Gambel's Quail in Texas is projected to rise about 237% by 2029 — from 0.38 in 2024 to a central estimate of 1.3 (95% range 0.72–1.9). A 5-year backtest shows a typical error of ±55.3%, with 80% of held-out values landing inside the 95% band.

+237%Change by 2029
1.3Projected 2029 index
0.72–1.995% range
±55.3%Backtest error
19782029
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
20251.20.581.7
20261.20.621.8
20271.20.651.8
20281.30.691.8
20291.30.721.9

Gambel's Quail Survey Routes in Texas

Routes recording Gambel's Quail in Texas.
Presidio10120232004
Quitman Cyn.3520091999
Quitman Canyon 22620242010
Van Horn1720242017
Slaughter1620141978
Canutillo1020241994
Sierra Blanc620241999
Casa Piedra220232022

Gambel's Quail Population Trend in Other States

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