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Illustration of a Henslow's Sparrow (Centronyx henslowii) egg, 18.3 × 14.1 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Centronyx henslowii

  • 18.3 × 14.1 mm
  • Clutch: 3–4 eggs
Breeds in United States

Glossy white, with speckles and blotches.

Sources of information

Size
Average of 55 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. 782.
Description
Cornell Lab of Ornithology, All About Birds: Henslow's 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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