American Littoral Society: www.alsnyc.org
American Museum of Natural History: www.amnh.org
Baykeeper: www.nynjbaykeeper.org
Brooklyn Bird Club: www.brooklynbirdclub.org
Central Park Conservancy: www.cenralparknyc.org
EEAC Environmental Education Advisory Council: www.eeac-nyc.org
Green Guerillas: www.greenguerillas.org
Linnaean Society of New York: http://linnaeannewyork.org
Long Island Sound Foundation: www.lisfoundation.org
New York City Audubon Society: www.nycaudubon.org/home
New York City Department of Parks and Recreation: www.nycgovparks.org
New York Restoration Project: www.nyrp.org
Nurture New York’s Nature: www.nnyn.org
NYC Urban Park Rangers: www.nycgovparks.org/sub_about/parks_divisions/urban_park_rangers/pd_ur_rangers_events.php
Prospect Audubon Center: www.prospectparkaudubon.org
Prospect Park Alliance: www.prospectpark.org
Queens County Bird Club: www.littleneck.net/qcbc
Riverkeeper: www.riverkeeper.org
Riverside Park Fund: www.riversideparkfund.org
Save the Sound: www.savethesound.org
Sierra Club New York City Group: www.sierraclub.org/chapters/ny/nyc
Staten Island Bird Club: www.sibirdclub.com/
Staten Island’s Land Conservation Organization: www.siprotectors.org
Torrey Botanical Society: www.torreybotanical.org