Conservation Partners


National Audubon Society

The National Audubon Society, WCAS’ parent organization, mission is to conserve and restore natural ecosystems, focusing on birds, other wildlife, and their habitats for the benefit of humanity and the earth’s biological diversity. For more than a century, Audubon has built a legacy of conservation success by mobilizing the strength of its network of members, chapters, Audubon centers, state offices, and dedicated professional staff to connect people with nature and the power to protect it.

A powerful combination of science, education, and policy expertise combine in efforts ranging from protection and restoration of local habitats to the implementation of policies that safeguard birds, other wildlife, and the resources that sustain us all—in the U.S. and across the Americas.


Stony Brook-Millstone Watershed Association

Central New Jersey’s first environmental group since 1949. Works to protect water and the environment through conservation, advocacy, science and education. Partners with WCAS to host field trips and events.

Friends for the Abbott Marshlands

Abbott Marshlands comprises 3000 acres of diverse habitats – freshwater tidal and non-tidal marshes and swamps, ponds, and woodlands – are home to many kinds of plants and animals. Tidal freshwater marshes along Crosswicks and Watson’s Creeks are among most productive ecosystems in the world, rivaling tropical rainforests in the amount of plant production each year

Friends of Hopewell Valley Open Space

FoHVOS is a nonprofit land trust dedicated to preserving the Hopewell Valley’s character though open space and farmland preservation, and natural resource protection since 1987.

D&R Greenway Land Trust

Central New Jersey’s nonprofit land preservation organization, founded in 1989 through the collaboration and vision of four organizations: the Stony Brook – Millstone Watershed Association, Friends of Princeton Open Space, Regional Planning Partnership, and the Delaware & Raritan Canal Commission.

New Jersey Trails Association

Trail maps to preserved lands, affiliated with D&R Greenway.

Sourlands Conservancy

Dedicated to protecting, promoting and preserving the 90-square-mile Sourland region, home to the largest contiguous forest in Central New Jersey since 1986. Partners with WCAS to host events.

New Jersey Conservation Foundation

Protects natural areas and farmland state wide through land acquisition and stewardship; promotes strong New Jersey land use policies, and forges partnerships to help safeguard clean drinking water and other natural resources

New Jersey Audubon

New Jersey Audubon is a privately supported, not-for profit, statewide membership organization. Founded in 1897, and one of the oldest independent Audubon societies (unaffiliated with National Audubon.)

North American Butterfly Association—North Jersey Butterfly Club

Conserve Wildlife Foundation’s Wildlife Field Guide for New Jersey’s Endangered and Threatened Species


American Bird Conservancy

ABC’s mission is to conserve native birds and their habitats throughout the Americas. Our commitment to bird conservation remains absolute, even while some other groups shift their mission to prioritize people over wildlife. We believe unequivocally that conserving birds and their habitats benefits all other species — including people.

Cornell Lab of Ornithology

Cornell Lab of Ornithology is a world leader in the study, appreciation, and conservation of birds.… hallmarks are scientific excellence and technological innovation to advance the understanding of nature and to engage people of all ages in learning about birds and protecting the planet.


Launched in 2002 by the Cornell Lab of Ornithology and National Audubon Society, eBird has revolutionized the way that the birding community reports and accesses information about birds… The observations of each participant join those of others in an international network of eBird users. eBird then shares these observations with a global community of educators, land managers, ornithologists, and conservation biologists. In time these data will become the foundation for a better understanding of bird distribution across the western hemisphere and beyond.

  • Record the birds you see
  • Keep track of your bird lists
  • Explore dynamic maps and graphs
  • Share your sightings and join the eBird community
  • Contribute to science and conservation


Mercer County Park Commission

Links to park information and nature programs

State of New Jersey Endangered and Threatened Wildlife Species official website

Species lists and reporting instructions

New Jersey Natural Heritage Program

Plant species lists and reporting instructions

Special Plants of New Jersey lists and reporting

Mountains and Forest
Blackburnian Warbler © Tyler Christensen
Marsh Wren © Tyler Christensen
Baldpate forest in Spring © Fairfax Hutter
Canada Warbler © Tyler Christensen
Hepatica in Sourlands © Fairfax Hutter
Chestnut-sided Warbler © Tyler Christensen
Black Swallowtail © Fairfax Hutter
Turks Cap Lilies © Fairfax Hutter