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

Green Heron Population Trend in Arizona

All statesWetland birds

Green Heron in Arizona has fallen sharply: down 72% on the route-weighted index since 1982.

-72%Since 1982
11Routes In State
26Years

Notable Green Heron Trends in Arizona

long arc declinecomputed index

Green Heron has fallen sharply in Arizona: down 72% on the route-weighted index since 1982.

Green Heron Population Forecast in Arizona

If the recent trend holds, Green Heron in Arizona is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±99%, with 80% of held-out values landing inside the 95% band.

n/aChange by 2029
0.01Projected 2029 index
0.00–0.0695% range
±99%Backtest error
19792029
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
20250.010.000.07
20260.010.000.07
20270.010.000.07
20280.010.000.07
20290.010.000.06

Green Heron Survey Routes in Arizona

Routes recording Green Heron in Arizona.
Araby220191996
Carr Mtn220111989
Patagonia119811981
Cibola Lake119981995
Palo Verde120091994
Palo Verde 2120242024
Redington119931993
Laguna120221981
Coolidge119851985
Pomerene119821982
San Simon119791979

Green Heron Population Trend in Other States

alabamaarkansascaliforniaconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsin

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