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Illustration of a Harlequin Duck (Histrionicus histrionicus) egg, 57.5 × 41.5 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Histrionicus histrionicus

  • 57.5 × 41.5 mm
  • Clutch: 4–8 eggs
Breeds in Canada, United States

Pale creamy to pale buff.

Sources of information

Size
Average of 90 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 52.
Description
Cornell Lab of Ornithology, All About Birds: Harlequin Duck, Life History.
Drawing checked against a photo: Bird Eggs of Canada photo (Royal Alberta Museum).
Clutch
Cornell Lab of Ornithology, All About Birds.
Shape
Drawn from the length and width, with the taper estimated from the typical eggs of its group (how these eggs are drawn).

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