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Illustration of a Bewick's Wren (Thryomanes bewickii) egg, 16.4 × 12.7 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Thryomanes bewickii

  • 16.4 × 12.7 mm
  • Clutch: 3–8 eggs
Breeds in Canada, United States, Mexico

White with reddish-brown or purplish spots.

Sources of information

Size
Average of 40 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 178.
Agrees with: Cornell Lab of Ornithology, All About Birds: Bewick's Wren, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Bewick's Wren, 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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