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Species · Texas · BBS 2025 Release · 1966–2024

Harris's Hawk Population Trend in Texas

All statesGeneralists

Harris's Hawk in Texas has fallen sharply: down 68% on the route-weighted index since 1969.

-68%Since 1969
62Routes In State
57Years

Notable Harris's Hawk Trends in Texas

long arc declinecomputed index

Harris's Hawk has fallen sharply in Texas: down 68% on the route-weighted index since 1969.

Harris's Hawk Population Forecast in Texas

If the recent trend holds, Harris's Hawk in Texas is projected to fall about 17% by 2029 — from 0.25 in 2024 to a central estimate of 0.21 (95% range 0.00–0.53). A 5-year backtest shows a typical error of ±13%, with 100% of held-out values landing inside the 95% band.

-17%Change by 2029
0.21Projected 2029 index
0.00–0.5395% range
±13%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
20250.230.000.56
20260.230.000.55
20270.220.000.55
20280.220.000.54
20290.210.000.53

Harris's Hawk Survey Routes in Texas

Routes recording Harris's Hawk in Texas.
Millett 21320242013
Agua Nueva1120231969
Zapata1019871967
Encinal 2820242011
Dilley820242018
Loyola Beach 2620172010
Loyola Beach620091994
Catarina 3520242018
Encinal420101969
Sejita420231994
Laredo420231994
Millett420121995
Pedro Creek420051996
San Ygnacio319851967
George West320181968
Adamsville319771977
Langtry319951995
Wink319811978
Lag Atascosa220241993
Kingsville220231967
Petronila219921992
Mirando City220241969
L. Atascosa Nwr220221998
Campbellton220191984
Catarina220101970

Harris's Hawk Population Trend in Other States

arizonacalifornianew-mexico

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