Location and number of CBC count circles and Aechmophorus spp. abundance in eight wintering regions.

Coastal and interior circles are those Aechmophorus occidentalis) since the split of western and Clark’s grebes in 1985.1The Salish Sea includes the inland network of waterways in southern British Columbia and northern Washington and includes the Strait of Georgia, Strait of Juan de Fuca, and Puget Sound.