Species · BCR 13 · BBS 2025 Release · 1966–2024

Green Heron In Lower Great Lakes / St. Lawrence Plain

All regions Lower Great Lakes / St. Lawrence Plain Wetland birds

Green Heron in Lower Great Lakes / St. Lawrence Plain has edged down: down 12% on the route-weighted index since 1968.

-12%Since 1968

81Routes In Region

58Years

Notable Signals

No notable trend signals for Green Heron in Lower Great Lakes / St. Lawrence Plain. See the full index history below.

Forecast

If the recent trend holds, Green Heron in Lower Great Lakes / St. Lawrence Plain is projected to stay roughly flat through 2029, near 0.36 (95% range 0.00–0.74). A 5-year backtest shows a typical error of ±18.1%, with 100% of held-out values landing inside the 95% band.

+2%Change by 2029

0.36Projected 2029 index

0.00–0.7495% range

±18.1%Backtest error

Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.

Year	Projected index	95% low	95% high
2025	0.39	0.01	0.77
2026	0.38	0.00	0.76
2027	0.37	0.00	0.75
2028	0.37	0.00	0.75
2029	0.36	0.00	0.74

Routes In Lower Great Lakes / St. Lawrence Plain

Routes recording Green Heron in Lower Great Lakes / St. Lawrence Plain.

Rhinebeck	NEW-YORK	5	2018
Pulaski	NEW-YORK	4	2019
Maysville	OHIO	4	1994
Ghent	NEW-YORK	3	2008
Nashville	NEW-YORK	3	2018
Oneida	NEW-YORK	3	2009
N Victory	NEW-YORK	3	1969
Pittsfield	OHIO	3	2023
Garrettsvile	OHIO	3	1990
Lenox	OHIO	3	2024
Highland	NEW-YORK	2	2009
Orleans	NEW-YORK	2	2022
Mt Morris	NEW-YORK	2	2019
Cherry Hill	NEW-YORK	2	2013
St Johnsburg	NEW-YORK	2	2016
E Youngstown	NEW-YORK	2	2022
N Victory 2	NEW-YORK	2	2021
Watertown	NEW-YORK	2	2011
Alder Creek	NEW-YORK	2	2004
Ogdensburg	NEW-YORK	2	2017
Hopkinton	NEW-YORK	2	1981
Naples	NEW-YORK	2	2023
Harris Hill	NEW-YORK	2	2017
Lucerne	OHIO	2	2023
New Somerset	OHIO	2	1988

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