ONTBIRDS email OFO's electronic mailing listserv that notifies birders of interesting Ontario bird sightings
Ontario Nature formerly Federation of Ontario Naturalists (FON)
Nipissing Naturalists Club (North Bay Area)
Bird Studies Canada report: Conservation Priorities for the Birds of Southern Ontario
Ontario Partners in Flight The Ontario Partners In Flight Organizing Committee has completed the first draft of Ontario's Bird Conservation Region 13 (Lower Great Lakes / St. Lawrence Plain) Landbird Conservation Plan which is available online at the Bird Studies Canada website http://www.bsc-eoc.org/PIF/PIFOntario.html.
Royal Ontario Museum's interactive natural history page. The field guide provides pictures and sounds of many common Ontario Birds.
Baillie Birdathon: Help support this site and have fun while you are doing it!
Canadian Wildlife Service, (includes lots of info on birds, bird banding, migratory bird law, hunting info, etc.)
Avibase, information about all birds of the world includes subspecies, distribution and maps, taxonomy, and synonyms in 24 languages. Sponsored by Bird Studies Canada.