BirdAnalyst
Species · BCR 36 · BBS 2025 Release · 1966–2024

Indigo Bunting In Tamaulipan Brushlands

All regionsTamaulipan BrushlandsGeneralists

Indigo Bunting in Tamaulipan Brushlands has fallen sharply: down 64% on the route-weighted index since 1971.

-64%Since 1971
15Routes In Region
23Years

Notable Signals

long arc declinecomputed index

Indigo Bunting has fallen sharply in Tamaulipan Brushlands: down 64% on the route-weighted index since 1971.

Forecast

If the recent trend holds, Indigo Bunting in Tamaulipan Brushlands is projected to fall about 22% by 2029 — from 0.17 in 2024 to a central estimate of 0.13 (95% range 0.00–0.43). A 5-year backtest shows a typical error of ±40.2%, with 100% of held-out values landing inside the 95% band.

-22%Change by 2029
0.13Projected 2029 index
0.00–0.4395% range
±40.2%Backtest error
19672029
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
20250.140.000.44
20260.140.000.44
20270.130.000.44
20280.130.000.43
20290.130.000.43

Routes In Tamaulipan Brushlands

Routes recording Indigo Bunting in Tamaulipan Brushlands.
MillettTEXAS62012
EncinalTEXAS32000
Catarina 3TEXAS22024
LaredoTEXAS22013
Cavasara Cr.TEXAS21998
KingsvilleTEXAS11984
Mirando CityTEXAS11981
George WestTEXAS11974
La PryorTEXAS12003
HondoTEXAS12022
El IndioTEXAS11971
RaymondvilleTEXAS11998
DilleyTEXAS12023
GuerraTEXAS11998
ProgresoTEXAS12005

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