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COSEWIC Assessment and Status Report on the Common Nighthawk in Canada


Assessment Summary

Assessment Summary – April 2007

Common name:
Common Nighthawk

Scientific name:
Chordeiles Minor


Reason for designation:
In Canada, this species has shown both long and short-term declines in population. A 49% decline was determined for areas surveyed over the last three generations. Reduction of food sources has apparently contributed to the decline of this species, as with several other aerial insectivores. Reductions in habitat availability, caused by fire suppression, intensive agriculture, and declines in the number of gravel rooftops in urban areas, may also be factors in some regions.

Yukon, Northwest Territories, British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, New Brunswick, Prince Edward Island, Nova Scotia, Newfoundland and Labrador

Status history:
Designated Threatened in April 2007. Assessment based on a new status report.