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Illustration of a Savannah Sparrow (Passerculus sandwichensis) egg, 19.5 × 14.7 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Passerculus sandwichensis

  • 19.5 × 14.7 mm
  • Clutch: 2–6 eggs
Breeds in Canada, United States, Mexico, Guatemala

Pale greenish, bluish, tan, or white, with speckles and streaks. Colors vary greatly, sometimes even within clutches.

Sources of information

Size
Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 2, 1968), p. 681.
Agrees with: Cornell Lab of Ornithology, All About Birds: Savannah Sparrow, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Savannah Sparrow, 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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