For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Audubon Canyon Ranch
Audubon Canyon Ranch
Audubon Canyon Ranch is the largest known nesting area for great blue herons and American egrets on the Pacific Coast.
Location: Marin County, CA
Year designated: 1968
Acres: 611
Ownership: Private
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Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.
Last Updated: June 28, 2012






