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Illustration of a Grasshopper Sparrow (Ammodramus savannarum) egg, 18.7 × 14.4 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Ammodramus savannarum

  • 18.7 × 14.4 mm
  • Clutch: 3–7 eggs
Breeds in Canada and United States, Mexico, Central America (7 countries), the Caribbean and Colombia
show all 14Canada & United States: Canada, United States
Mexico: Mexico
Central America: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama
The Caribbean: Bonaire, Sint Eustatius and Saba, Curaçao, Caribbean islands
South America: Colombia

White with light reddish brown speckles.

Sources of information

Size
Average of 92 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. 731.
Agrees with: Cornell Lab of Ornithology, All About Birds: Grasshopper Sparrow, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Grasshopper Sparrow, 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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