Buckeye Trail Association - nonprofit organization whose purpose is to develop, maintain, and promote a statewide trail system in Ohio. The Buckeye Trail is over 1200 miles long, encircles the state, passes through state and metropolitan parks, goes on canal towpaths, abandoned railroad rights-of-way, and rural roads.

Ohio Birders Resources - good information on species sited, where to see birds, range maps and more.

Dick & Jean Hoffman - Birders in Cleveland Heights, Ohio - bird siting and links to other related resources.

Central Ohio Birding and Environmental Information Center - Comprehensive resource for birdwatchers, with special emphasis on the Central Ohio/Greater Columbus area.