Archibald Thorburn Plate 77, Archibald Thorburn, 1918

Archibald thorburn's plate 77 top: great northern diver (gavia immer) (summer & winter) mid-left: red-throated diver (gavia stellata) (summer) mid-right: white-billed diver (gavia adamsii) (summer) bottom: black-throated diver (gavia arctica) (summer). Date: 1918.