BirdAnalyst
Species · BCR 37 · BBS 2025 Release · 1966–2024

Botteri's Sparrow In Gulf Coastal Prairie

All regionsGulf Coastal PrairieGeneralists

Botteri's Sparrow in Gulf Coastal Prairie has fallen sharply: down 58% on the route-weighted index since 1974.

-58%Since 1974
4Routes In Region
35Years

Notable Signals

long arc declinecomputed index

Botteri's Sparrow has fallen sharply in Gulf Coastal Prairie: down 58% on the route-weighted index since 1974.

Forecast

If the recent trend holds, Botteri's Sparrow in Gulf Coastal Prairie is projected to stay roughly flat through 2029, near 0.28 (95% range 0.00–0.91). A 5-year backtest shows a typical error of ±591.2%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.28Projected 2029 index
0.00–0.9195% range
±591.2%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
20250.290.000.92
20260.280.000.92
20270.280.000.91
20280.280.000.91
20290.280.000.91

Routes In Gulf Coastal Prairie

Routes recording Botteri's Sparrow in Gulf Coastal Prairie.
L. Atascosa NwrTEXAS32019
Lag AtascosaTEXAS12022
San PedroTEXAS12023
Loyola Beach 2TEXAS12024

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