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Illustration of a Ruddy Duck (Oxyura jamaicensis) egg, 62.3 × 45.6 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Oxyura jamaicensis

  • 62.3 × 45.6 mm
  • Clutch: 3–13 eggs
Breeds in Canada and United States, Mexico, Central America (5 countries), the Caribbean and South America (6 countries)
show all 15Canada & United States: Canada, United States
Mexico: Mexico
Central America: Belize, Costa Rica, Guatemala, Honduras, Nicaragua
The Caribbean: Caribbean islands
South America: Argentina, Bolivia, Chile, Colombia, Ecuador, Peru

White to yellowish white, with a pebbly texture.

Sources of information

Size
Average of 80 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 155.
Agrees with: Cornell Lab of Ornithology, All About Birds: Ruddy Duck, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Ruddy Duck, Life History.
Drawing checked against a photo: Bird Eggs of Canada photo (Royal Saskatchewan 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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