10 eggs at true relative size, from the 23.3 mm egg of the Gray Catbird to the 30.1 mm egg of the California Thrasher.
About this collection. These eggs cover most of the birds that nest in Canada and the United States, plus a few famous eggs from elsewhere, like the Ostrich and the extinct Elephant Bird. It isn’t every bird in the world yet; we’ll update this note as the collection grows.
Bendire's Thrasher
Toxostoma bendirei
- 25.6 × 19.1 mm
- Clutch: 3–5 eggs
White or very pale blue-green with dark speckles.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 386.
- Description
- Cornell Lab of Ornithology, All About Birds: Bendire's Thrasher, Life History.
- 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).
Brown Thrasher
Toxostoma rufum
- 26.5 × 19.4 mm
- Clutch: 2–6 eggs
Glossy pale blue, pale greenish blue, or white, with many red-brown speckles.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 359.
Agrees with: Cornell Lab of Ornithology, All About Birds: Brown Thrasher, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Brown Thrasher, Life History.
- 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).
Make a 3D-printable copy of this egg →See posters with this egg →
California Thrasher
Toxostoma redivivum
- 30.1 × 21.2 mm
- Clutch: 1–6 eggs
Pale blue with dark spots and blotches; markings may form a ring around the large end or be uniformly distributed over the egg.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 405.
- Description
- Cornell Lab of Ornithology, All About Birds: California Thrasher, Life History.
- 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).
Crissal Thrasher
Toxostoma crissale
- 26.8 × 19.2 mm
- Clutch: 1–4 eggs
Pale blue and unmarked.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 422.
- Description
- Cornell Lab of Ornithology, All About Birds: Crissal Thrasher, Life History.
- 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).
Curve-billed Thrasher
Toxostoma curvirostre
- 29.3 × 20.2 mm
- Clutch: 3–5 eggs
Light bluish-green to pale yellow with reddish-brown speckling.
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. 392.
Agrees with: Cornell Lab of Ornithology, All About Birds: Curve-billed Thrasher, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Curve-billed Thrasher, Life History.
- 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).
Gray Catbird
Dumetella carolinensis
- 23.3 × 17.5 mm
- Clutch: 1–6 eggs
Turquoise green, sometimes with small red spots.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 324.
- Description
- Cornell Lab of Ornithology, All About Birds: Gray Catbird, Life History.
- 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).
Make a 3D-printable copy of this egg →See posters with this egg →
LeConte's Thrasher
Toxostoma lecontei
- 27.6 × 19.7 mm
- Clutch: 2–5 eggs
Bluish green, with variable amount of dark markings.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 416.
- Description
- Cornell Lab of Ornithology, All About Birds: LeConte's Thrasher, Life History.
- 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).
Long-billed Thrasher
Toxostoma longirostre
- 27.3 × 19.8 mm
- Clutch: 2–5 eggs
Pale greenish white, densely speckled with tiny brown markings.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 376.
- Description
- Cornell Lab of Ornithology, All About Birds: Long-billed Thrasher, Life History.
- 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).
Northern Mockingbird
Mimus polyglottos
- 24.3 × 18.3 mm
- Clutch: 2–6 eggs
Pale blue or greenish white splotched with red or brown.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 303.
Agrees with: Cornell Lab of Ornithology, All About Birds: Northern Mockingbird, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Northern Mockingbird, Life History.
- 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Sage Thrasher
Oreoscoptes montanus
- 24.8 × 18 mm
- Clutch: 4–5 eggs
Eggs are a vibrant turquoise with heavy splotches of chestnut brown.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Nuthatches, Wrens, Thrashers, and Their Allies (U.S. National Museum Bulletin 195, 1948), p. 429.
Agrees with: Cornell Lab of Ornithology, All About Birds: Sage Thrasher, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Sage Thrasher, Life History.
- 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).
Make a 3D-printable copy of this egg →See posters with this egg →