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

Green Heron Population Trend in Kansas

All statesWetland birds

Green Heron in Kansas has collapsed: down 77% on the route-weighted index since 1969.

-77%Since 1969
47Routes In State
57Years

Notable Green Heron Trends in Kansas

long arc declinecomputed index

Green Heron has collapsed in Kansas: down 77% on the route-weighted index since 1969.

Green Heron Population Forecast in Kansas

If the recent trend holds, Green Heron in Kansas is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.28). A 5-year backtest shows a typical error of ±48.8%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.03Projected 2029 index
0.00–0.2895% range
±48.8%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
20250.070.000.32
20260.060.000.31
20270.050.000.30
20280.040.000.29
20290.030.000.28

Green Heron Survey Routes in Kansas

Routes recording Green Heron in Kansas.
Albert619931969
Morehead320122001
Solomon320101988
Galesburg220231967
Dalton220051969
Coldwater219821974
Leoville220121976
Pittsburg220182004
Melrose120161967
Humboldt120221972
Lapland120131974
Jewell 2120152015
Wellington119911968
Coats120091967
Ashland120171985
Olathe120171967
Dover120211970
Barclay120181967
Wreford120161969
Ellinor119921970
Chapman119771968
Buckeye120141975
Kanopolis120111971
Gray120121975
Hays119861973

Green Heron Population Trend in Other States

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

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