Erika and I heard these Tundra Swans before they flew overhead on 8 November 2021 at the Billy Frank Jr Nisqually National Wildlife Refuge. I think I am correct in our identification. If you look closely, the black eyes of these birds are clearly visible against the white sides of their face. A Trumpeter Swan has the eyes more hidden by a black background. Further, the black edge of the bills appears to run straight down, rather than angle towards the front of the bill. This straight line is another field mark of Tundra Swans. These swans are locally common in the northern areas of Puget Sound, less so here in the south, They breed in western Alaska.
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