Rhode Island

    • Treeversity

      January 1–December 31

      Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont

      Arnold Arboretum of Harvard University

    • Early Detection & Distribution Mapping System (EDDMaps)

      January 1–December 31

      Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont

      The University of Georgia Center for Invasive Species and Ecosystem Health

    • Gulls of Appledore

      January 1–December 31

      Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont

      Northern Essex Community College

    • Community Collaborative Rain, Hail & Snow Network (CoCoRaHS)

      January 1–December 31

      Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont

    • Picture Post

      January 1–December 31

      Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont

      University of New Hampshire

    • Rusty Blackbird Spring Migration Blitz

      February 1–April 30

      Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont

      International Rusty Blackbird Working Group

    • Plant Conservation Volunteer Corps

      March 1–September 30

      Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont

      New England Wildflower Society

    • Christmas Bird Count

      December 1–January 31

      Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont

      National Audubon Society

    • International Monarch Monitoring Blitz

      July 24–August 2

      Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont

      Monarch Larva Monitoring Project