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Eggs

Illustration of a Ring-necked Duck (Aythya collaris) egg, 57.5 × 39.8 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Aythya collaris

  • 57.5 × 39.8 mm
  • Clutch: 6–14 eggs
Breeds in Canada, United States

Olive-gray to olive-buff.

Sources of information

Size
Average of 75 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 226.
Description
Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 226.
Drawing checked against a photo: Bird Eggs of Canada photo (Royal Alberta Museum).
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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