Ontario Breeding Bird Atlas (2001-2005): raw breeding evidence

Birds Canada

Ontario Ministry of Natural Resources and Forestry

Canadian Wildlife Service

Ontario Field Ornithologists

Ontario Nature

Project name: Ontario Breeding Bird Atlas

Goals : The atlas represents an enormous coordinated effort by over 3,000 birders who surveyed the province from Lake Erie to Hudson Bay. It summarizes the state of Ontario birds, including information on each species' biology and abundance. Special sections analyze changes in bird populations and distribution, indicating which species are most imperiled and which are thriving.

Dataset summary : Ontario Breeding Bird Atlas (2001-2005): breeding evidence as reported by participants and effort information from individual visits

Year started : 2001

Year finished : 2005

Geographic area covered : Ontario

Primary species covered : All breeding bird species