Western Gull
Larus occidentalis
Synopsis: Breeds on coastal headlands, islands, and on bridges and rooftops in bays the length of the coast.

Habitat Associations:
strongest
Coastal Ledges & Islands (47076 acres)
lesser
Coastal Headland Grass & Shrubland (2285 acres)
Coastal Dunes & Ponds with Widely Scattered Shrubs/Trees (43358 acres)

Relative Detectability: Easy to spot and to confirm nesting.

Challenge: Determine upriver limits of its breeding range on the Columbia River.