Welcome to Constitution Marsh Audubon Center and Sanctuary

The natural side of the Hudson River.

The Constitution Marsh Visitor Center will be closed for the season beginning November 1st, 2022.  The Constitution Marsh Audubon Center and Sanctuary trails will continue to be open daily from sunrise to sunset, weather permitting. The public is welcome to visit the Marsh and walk the trail as space allows. Those still interested in visiting our center may call us at 845-265-2601 to make an appointment to come into the building. Please visit our Planning a Visit page for the current parking and access information.

Constitution Marsh Audubon Center and Sanctuary is a unique and beautiful tidal marsh located in Putnam County, New York, and serves as vital natural habitat in the Hudson River Estuary. It is situated on the east shore of the Hudson River, just south of the village of Cold Spring. The marsh is an Audubon New York Important Bird Area, a New York State Bird Conservation Area, and is designated as a Significant Coastal Fish and Wildlife Habitat.

We conduct nature education programs for visiting groups, bird studies, invasive species management, and habitat restoration efforts. Please read our FAQ page for important information and a safe and enjoyable visit, and explore the above menus to learn more about Audubon New York's stewardship and education programs devoted to the conservation of birds, other wildlife, and their habitats across New York State.

Audubon fosters an inclusive community that honors individuals of all races, cultures, abilities, religions, sexual orientations, gender expressions, and identities. Click here to read Audubon's full statement on equity, diversity, and inclusion.

Planning a Visit
Visit

Planning a Visit

Important information about visiting Constitution Marsh

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Birds
Birds

Birds

Birds of New York

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Group and Public Programs
Programs

School Programs

Students become scientists when visiting Constitution Marsh

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Internship Programs
Programs

Internship Programs

Giving students the opportunity to work and learn about the conservation field.

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News and Updates

Hudson Valley Sanctuaries Are a Home for Early-Career Environmentalists
News

Hudson Valley Sanctuaries Are a Home for Early-Career Environmentalists

Internships through the Student Conservation Association give early-career environmentalists a chance to see what its like out in the field.

Audubon: “History—and we–will hold responsible the elected officials who have promoted the assault on our democracy.”
News

Audubon: “History—and we–will hold responsible the elected officials who have promoted the assault on our democracy.”

A statement from David Yarnold, president and CEO of the National Audubon Society.

How To Do a "Bird Sit"
Get Involved

How To Do a "Bird Sit"

Pause and enjoy a peaceful moment with the birds.

Art Project: This Place Is for the Birds!
Get Involved

Art Project: This Place Is for the Birds!

After learning which migratory flyway they live in, kids create invitations that promote the local area as a good place for birds to stop or stay.

Game: Follow a Bird's Migration Story
Birds

Game: Follow a Bird's Migration Story

Kids play an interactive game following the migration journeys of five species. Then, they write their own migration story.

How to: Create Window Decals to Prevent Bird Collisions
Get Involved

How to: Create Window Decals to Prevent Bird Collisions

A fun and easy way to prevent migratory birds from flying into your windows.

"So Long, and Thanks to the Birds"
Audubon In Action

"So Long, and Thanks to the Birds"

Reflecting on her time at Constitution Marsh, the 2019 Student Conservation Association Intern "Fledges the Nest."

New Audubon Science: Two-Thirds of North American Birds at Risk of Extinction Due to Climate Change
News

New Audubon Science: Two-Thirds of North American Birds at Risk of Extinction Due to Climate Change

Enter your zip code into Audubon’s Birds and Climate Visualizer and it will show you how climate change will impact your birds and your community and includes ways you can help.

Ways to Combat and Adapt to Climate Change
Audubon In Action

Ways to Combat and Adapt to Climate Change

Audubon's network is working to build a brighter future for birds and people - locally, and nationally.

How you can help, right now