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

Harris's Hawk In Tamaulipan Brushlands

All regionsTamaulipan BrushlandsGeneralists

Harris's Hawk in Tamaulipan Brushlands has fallen sharply: down 58% on the route-weighted index since 1969.

-58%Since 1969
27Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Harris's Hawk has fallen sharply in Tamaulipan Brushlands: down 57% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Harris's Hawk in Tamaulipan Brushlands is projected to fall about 24% by 2029 — from 3.0 in 2024 to a central estimate of 2.3 (95% range 0.00–4.9). A 5-year backtest shows a typical error of ±30.5%, with 100% of held-out values landing inside the 95% band.

-24%Change by 2029
2.3Projected 2029 index
0.00–4.995% range
±30.5%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
20252.40.005.0
20262.40.005.0
20272.40.004.9
20282.30.004.9
20292.30.004.9

Routes In Tamaulipan Brushlands

Routes recording Harris's Hawk in Tamaulipan Brushlands.
Millett 2TEXAS132024
Agua NuevaTEXAS112023
ZapataTEXAS101987
DilleyTEXAS82024
Encinal 2TEXAS82024
Catarina 3TEXAS52024
EncinalTEXAS42010
SejitaTEXAS42023
LaredoTEXAS42023
MillettTEXAS42012
Pedro CreekTEXAS42005
San YgnacioTEXAS31985
George WestTEXAS32018
KingsvilleTEXAS22023
Mirando CityTEXAS22024
CatarinaTEXAS22010
El IndioTEXAS22007
RaymondvilleTEXAS22009
GuerraTEXAS22023
ProgresoTEXAS22009
RachalTEXAS12023
RandadoTEXAS12022
La PryorTEXAS12017
HondoTEXAS12019
El SauzTEXAS12013

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