Project Name
Ontario Breeding Bird Atlas
Access Level
Open
Year started
2001
Year Ended
2005
Ontario Breeding Bird Atlas (2001-2005): includes point count information and species data
Ontario
All breeding bird species
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.
Birds Canada, Ontario Ministry of Natural Resources and Forestry, Canadian Wildlife Service, Ontario Field Ornithologists, and Ontario Nature. 2025. "Ontario Breeding Bird Atlas". Data accessed from NatureCounts, Birds Canada.