Hawk Cliff
- Details on a hawkwatching site near Port Stanley and information on the Hawk Cliff Foundation.
- http://www.ezlink.ca/~thebrowns/HawkCliff/

Hamilton Naturalists' Club
- Meetings, field trips, bird hotline, birding guide, Peregrine Falcon webcam, and checklists.
- http://www.hamiltonnature.org/

Toronto Area Birding Reports
- Sightings message board.
- http://www.outdoorontario.net/birds

Thunder Bay Field Naturalists Birding Page
- Information about projects and the Thunder Cape Bird Observatory bird banding station at the southern tip of the Sibley Peninsula. Rarities, banding reports, Saw-whet Owl migration monitoring, MAPS site, and overview.
- http://www.tbfn.net

Nature Stuff - Birds and Birding
- Birding locations, what birds to expect, tips on bird feeding and naturalizing your yard, and information about the Prince Edward County Field Naturalists and Quinte Field Naturalists.
- http://www.naturestuff.net/index.php?option=com_content&task=category&id=14&Itemid=29

Muskoka Bird Board
- Reports of sightings in the Muskoka area.
- http://b3.boards2go.com/boards/board.cgi?&user=MuskokaBirdBoard

Bird Watching in the Bruce Peninsula, Ontario
- Brief information and links.
- http://www.getawaystoontario.ca/brucepeninsula/birdwatching_brucepeninsula2.html

Ottawa Field-Naturalists' Club
- The oldest natural history club in Canada. Birding section includes recent bird sightings, count results, Peregrine watch reports, local birding sites, detailed site guide for Britannia Conservation Area, and seasonal Ottawa-Hull checklist.
- http://www.ofnc.ca/

Kingston Field Naturalists
- Local nature club with about 450 members. Meetings, newsletters, checklists, outings, projects, and links.
- http://kingstonfieldnaturalists.org/

Jean Iron's Photos
- Digiscoped photos of rare and common birds, mostly from Ontario.
- http://www.jeaniron.ca/

Huron Fringe Birding Festival
- Annual event held in late May at MacGregor Point Park, Port Elgin.
- http://www.friendsofmacgregor.org/hfbf/hfbf.htm

Birds of Northumberland County
- Lists and reports prepared from historical bird records in Northumberland County, Ontario.
- http://homepage.mac.com/wings_4d/bonc/bonc_index.html

Prince Edward Point Bird Observatory
- Banding station at the eastern tip of Prince Edward County, with events, banding reports, and species accounts.
- http://www.peptbo.ca/

Birding Guide to Pt. Pelee, Windsor and Essex County
- Site guide from the Ojibway Nature Centre.
- http://www.ojibway.ca/birding.htm

Ontario Field Ornithologists
- News, publications, official provincial bird list, recognizable form checklist, Ontario Bird Records Committee, review list, documentation guide, bird protection laws, Ontbirds info, and articles.
- http://www.ofo.ca/

Ontario Bird Banding Association
- Overview of the club and its activities.
- http://ontbanding.org/

OntarioBirding
- E-mail discussion group for Ontario birding.
- http://groups.yahoo.com/group/OntarioBirding/

Nipissing Birding
- Birding spots, bird list, Nipissing Naturalists Club, and Temiskaming Field Naturalists.
- http://www.venturenorth.com/livres/v1.htm

ONTBIRDS
- Archive of e-mail group for Ontario bird sightings.
- http://www.virtualbirder.com/bmail/ontbirds/latest.html

South Peel Naturalists' Club
- Based in Mississauga, with field trips, meetings, bird sightings, checklist, and hotspots.
- http://www.spnc.ca/

Ontario Natural Heritage Information Centre
- Includes list of Ontario's birds.
- http://www.mnr.gov.on.ca/MNR/nhic/nhic.html

Ontario Programs of Bird Studies Canada
- Conservation priorities, Ontario birds at risk, Great Lakes Marsh Monitoring Program, nocturnal owl surveys, and Breeding Bird Surveys in Ontario.
- http://www.bsc-eoc.org/ontario.html

Canadian Wildlife Service
- A wealth of information about birds and other wildlife in Ontario.
- http://www.on.ec.gc.ca/wildlife/

Ontario's Biodiversity: Field Guides
- Build your own guide to common birds of any county or the province.
- http://www.rom.on.ca/ontario/fieldguides.html

Festival of Hawks
- September celebration of the annual fall migration spectacle at Holiday Beach Conservation Area.
- http://www.erca.org/ca/hbca/hawkfest.htm

Holiday Beach Migration Observatory
- Studies migration of raptors and other birds at Holiday Beach in Essex County. Photos and raptor count summaries.
- http://www.hbmo.org/

Kitchener Waterloo Field Naturalists
- Meetings, outings, news, sightings, photographs, and a checklist.
- http://www.sentex.net/~tntcomm/kwfn/

Peterboro Field Naturalists
- Events, programs, bird arrival dates, and nature almanac.
- http://www3.sympatico.ca/jbyoung/pfnhome.htm

Pembroke Area Field Naturalists
- Birdfinding guide, weekly occurrence bird checklist, photos, butterfly checklist, bird and dragonfly count results, and field trips.
- http://www.renc.igs.net/~cmichener/pafn.index.html

Presqu'ile Birding
- Weekly birding reports.
- http://www.friendsofpresquile.on.ca/birding.htm

Muskoka Nature News
- Sightings, breeding bird atlas project, photos, and links.
- http://www.muskoka.com/~sinclair/news.html

Federation of Ontario Naturalists
- Conservation group for Ontario's wetlands, woodlands, and wildlife. Includes Important Bird Areas project, list of birding festivals, and overview of 16 nature reserves.
- http://www.ontarionature.org/

Birds Ontario
- Breeding bird atlas project information.
- http://www.birdsontario.org/

Ontario Birding
- Events, birding reports, photos, products for birders, and links.
- http://www.web-nat.com/bic/ont/

Prince Edward County Birding
- General overview and photos.
- http://www.pec.on.ca/other/birds.html

Niagara Peninsula Hawkwatch
- Overview and count results.
- http://www.freenet.hamilton.on.ca/link/niaghawk/

Norfolk Field Naturalists
- Meetings, field trips, newsletter, publications, detailed report on the birds and other forms of life of Haldimand-Norfolk with annotated checklists, and tree tour.
- http://www.kwic.com/nfn/

Toronto Field Naturalists
- Publications, meetings, and news.
- http://www.sources.com/tfn/

Long Point Bird Observatory
- Field station on the north shore of Lake Erie, with sightings, migration monitoring, checklist, summer birds, Tree Swallow study, waterfowl and wetlands research, young ornithologists' workshop, and volunteer opportunities.
- http://www.bsc-eoc.org/Lpbo.html