Ontario Nature https://ontarionature.org/
Nature Canada http://naturecanada.ca/
Bird Studies Canada https://www.birdscanada.org/
Ontario Field Ornithologists http://www.ofo.ca/
Shaw Woods Outdoor Education Centre http://www.shawwoods.ca/
MacNamara Field Naturalists Club (Arnprior) http://mfnc.ca/
Nippissing Naturalists Club (North Bay) https://www.nipnats.com/
Ottawa Field-Naturalists Club http://ofnc.ca/
Friends of the Petawawa Research Forest https://friendsoftheprf.com/
American Birding Association https://www.aba.org/