Sea Duck Key Habitat Sites Atlas

This Atlas describes 85 sites throughout North America that constitute important sea duck habitats. It is intended to heighten awareness of valuable sea duck habitats, aid in prioritizing habitat conservation and protection efforts, and help in evaluating environmental assessments. Criteria for inclusion in this atlas were strict, relative to criteria used for other bird habitat designations, to highlight those habitats most critical to sea ducks during at least one season. To be included in this atlas, sites had to meet the following minimum criteria: (1a) The area supports at least 5% of the continental population of a sea duck species, or (1b) The area supports, or has recently supported, a total of 20,000 sea ducks (any species) [...]