BirdAnalyst
Species · BCR 20 · BBS 2025 Release · 1966–2024

Olive Sparrow In Edwards Plateau

All regionsEdwards PlateauGeneralists

Olive Sparrow in Edwards Plateau has surged: up 141% on the route-weighted index since 1998.

+141%Since 1998
4Routes In Region
28Years

Notable Signals

long arc increasecomputed index

Olive Sparrow has surged in Edwards Plateau: up 141% on the route-weighted index since 1998.

Forecast

If the recent trend holds, Olive Sparrow in Edwards Plateau is projected to rise about 54% by 2029 — from 1.2 in 2024 to a central estimate of 1.8 (95% range 0.37–3.3). A 5-year backtest shows a typical error of ±42%, with 60% of held-out values landing inside the 95% band.

+54%Change by 2029
1.8Projected 2029 index
0.37–3.395% range
±42%Backtest error
19952029
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
20251.70.283.2
20261.80.303.2
20271.80.333.2
20281.80.353.3
20291.80.373.3

Routes In Edwards Plateau

Routes recording Olive Sparrow in Edwards Plateau.
Indian MtnTEXAS152024
MontellTEXAS32024
UtopiaTEXAS12019
LeakeyTEXAS12024

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