BirdAnalyst
Species · Texas · BBS 2025 Release · 1966–2024

Green Heron Population Trend in Texas

All statesWetland birds

Green Heron in Texas has fallen sharply: down 52% on the route-weighted index since 1969.

-52%Since 1969
170Routes In State
57Years

Notable Green Heron Trends in Texas

long arc declinecomputed index

Green Heron has fallen sharply in Texas: down 52% on the route-weighted index since 1969.

Green Heron Population Forecast in Texas

If the recent trend holds, Green Heron in Texas is projected to fall about 45% by 2029 — from 0.66 in 2024 to a central estimate of 0.36 (95% range 0.00–0.85). A 5-year backtest shows a typical error of ±15.8%, with 100% of held-out values landing inside the 95% band.

-45%Change by 2029
0.36Projected 2029 index
0.00–0.8595% range
±15.8%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
20250.430.000.93
20260.420.000.91
20270.400.000.89
20280.380.000.87
20290.360.000.85

Green Heron Survey Routes in Texas

Routes recording Green Heron in Texas.
Circle919771977
Winnie820241967
Chandler720041968
Indianola620241973
Chinquapin620241995
Lag Atascosa520241974
Casa Piedra519921992
Hinkles Fer420211972
Katy420241968
Muldoon420241970
Oak Grove419991967
Catarina 2420112011
Manor420242017
Loyola Beach420091994
Oyster Lake420241995
Burton420241996
Easton420121994
Claytonville420011995
Zapata319831969
George West320221973
Lone Oak320211969
New Waverly320031969
Caledonia320221969
Massey Lake320231970
Morton320241970

Green Heron Population Trend in Other States

alabamaarizonaarkansascaliforniaconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseevermontvirginiawashingtonwest-virginiawisconsin

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