Cepphus grylle
- 59.6 × 39.5 mm
- Clutch: 1–2 eggs
Breeds in Canada, United States
Dull white to pale green, boldly marked with dark spots and blotches.
Sources of information
- Size
- Average of 53 eggs: Bent, Life Histories of North American Diving Birds (U.S. National Museum Bulletin 107, 1919), p. 163.
- Description
- Cornell Lab of Ornithology, All About Birds: Black Guillemot, Life History.
Drawing checked against a photo: Wikimedia Commons 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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