Birds of the St. Lawrence:
geographical distribution

Most of the species recorded in the St. Lawrence are Nearctic breeders (n = 375, 94%) although some also have a Paleoarctic (n = 124/375) or Neotropical (n = 107/375) distribution during the breeding season. Although very few of the breeding birds of the St. Lawrence also breed in the Neotropics, it is a well-known fact that 73% of our species winter in this biogeographical region.

North American distribution

Over half of the species recorded along the St. Lawrence occur in coniferous (n = 248, 62%) and deciduous (n = 219, 55%) forests during the breeding season. In addition, more of these species have breeding ranges that are restricted to northern North America (27%) than to southern North America (16%); 42% of these species, however, breed throughout North America. A number of accidental species in the St. Lawrence consist of oceanic species that only breed on islands in the ocean (1%) or do not breed at all in North America (6%), such as certain Procellariiformes whose breeding colonies are located on oceanic islands near Antarctica.