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Aythya valisineria
Synopsis: Local breeder in marshes in south-central Oregon in the Klamath, Summer Lake, Warner Valley, and Harney basins, and also at Ladd Marsh in Union County.

Habitat Associations:
strongest
Lake/Pond Shoreline & Islands (315547 acres)
Edges of Freshwater Marsh (13109 acres)
lesser
Seasonally Wet Playa (45266 acres)

Relative Detectability: Easy to spot and to confirm nesting, usually by noting fledglings accompanied by adults.

Challenge: Determine if species no longer breeds in north central and northeastern Oregon.