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Eggs

Illustration of a Ring-billed Gull (Larus delawarensis) egg, 59.3 × 42.3 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Larus delawarensis

  • 59.3 × 42.3 mm
  • Clutch: 2–4 eggs
Breeds in Canada, United States

Pale olive gray with dark brown speckles.

Sources of information

Size
Average of 40 eggs: Bent, A. C. 1921. Life histories of North American gulls and terns. U.S. National Museum Bulletin 113, scan leaf 207 (account begins printed p. 132).
Description
Cornell Lab of Ornithology, All About Birds: Ring-billed Gull, 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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