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Eggs

Illustration of a Yellow-headed Blackbird (Xanthocephalus xanthocephalus) egg, 25.83 × 17.92 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Xanthocephalus xanthocephalus

  • 25.83 × 17.92 mm
  • Clutch: 2–5 eggs
Breeds in Canada, United States

Grayish to greenish white, splotched with brown, rufous, and pearl gray.

Sources of information

Size
Average of 134 eggs: Bent, Life Histories of North American Blackbirds, Orioles, Tanagers, and Allies (U.S. National Museum Bulletin 211, 1958), p. 108.
Agrees with: Cornell Lab of Ornithology, All About Birds: Yellow-headed Blackbird, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Yellow-headed Blackbird, 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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