14 eggs at true relative size, from the 19.1 mm egg of the Bluethroat to the 30.5 mm egg of the Varied Thrush.
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.
American Robin
Turdus migratorius
- 28.1 × 20 mm
- Clutch: 3–5 eggs
Sky blue or blue-green and unmarked.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 22.
- Description
- Cornell Lab of Ornithology, All About Birds: American Robin, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Bicknell's Thrush
Catharus bicknelli
- 21.9 × 16.6 mm
- Clutch: 3–4 eggs
Bluish green with light brown speckling.
Sources of information
- Size
- Average of 29 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 204.
Agrees with: Cornell Lab of Ornithology, All About Birds: Bicknell's Thrush, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Bicknell's Thrush, Life History.
Drawing checked against a photo: Bird Eggs of Canada photo (Royal Ontario 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).
Bluethroat
Luscinia svecica
- 19.1 × 14.5 mm
- Clutch: 5–7 eggs
Blue or bluish green with fine reddish speckling.
Sources of information
- Size
- Average of 45 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 308.
- Description
- Cornell Lab of Ornithology, All About Birds: Bluethroat, Life History.
Drawing checked against a photo: Bird Eggs of Canada photo (University of Saskatchewan Department of Biology Natural History Collection). - 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).
Eastern Bluebird
Sialia sialis
- 20.7 × 16.3 mm
- Clutch: 2–7 eggs
Pale blue or, rarely, white.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 243.
Agrees with: Cornell Lab of Ornithology, All About Birds: Eastern Bluebird, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Eastern Bluebird, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Gray-cheeked Thrush
Catharus minimus
- 23 × 17 mm
- Clutch: 3–5 eggs
Light greenish blue marked with brown blotches around larger end.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 192.
Agrees with: Cornell Lab of Ornithology, All About Birds: Gray-cheeked Thrush, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Gray-cheeked Thrush, 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).
Hermit Thrush
Catharus guttatus
- 22.1 × 16.8 mm
- Clutch: 3–6 eggs
Light blue, sometimes spotted with brown.
Sources of information
- Size
- Average of 40 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949).
Agrees with: Cornell Lab of Ornithology, All About Birds: Hermit Thrush, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Hermit Thrush, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Mountain Bluebird
Sialia currucoides
- 22 × 16.5 mm
- Clutch: 4–8 eggs
Pale blue to bluish white, rarely pure white.
Sources of information
- Size
- Cornell Lab of Ornithology, All About Birds: Mountain Bluebird, Life History.
- Description
- Cornell Lab of Ornithology, All About Birds: Mountain Bluebird, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Northern Wheatear
Oenanthe oenanthe
- 21.2 × 15.9 mm
- Clutch: 3–8 eggs
Egg color ranges from white to pale blue to blue green, sometimes with a few reddish-brown marks.
Sources of information
- Size
- Average of 100 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 293.
- Description
- Cornell Lab of Ornithology, All About Birds: Northern Wheatear, Life History.
Drawing checked against a photo: Wikimedia Commons photo; Bird Eggs of Canada photo (University of Saskatchewan Department of Biology Natural History Collection). - 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 →
Swainson's Thrush
Catharus ustulatus
- 22.4 × 16.5 mm
- Clutch: 1–5 eggs
Blue to greenish blue speckled with reddish or brown.
Sources of information
- Size
- Average of 40 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 179.
Agrees with: Cornell Lab of Ornithology, All About Birds: Swainson's Thrush, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Swainson's Thrush, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Townsend's Solitaire
Myadestes townsendi
- 23.5 × 17.2 mm
- Clutch: 3–5 eggs
Variable in color from dull white to pale pink to greenish blue, with dark blotches and spots scattered throughout.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 321.
Agrees with: Cornell Lab of Ornithology, All About Birds: Townsend's Solitaire, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Townsend's Solitaire, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Varied Thrush
Ixoreus naevius
- 30.5 × 21.3 mm
- Clutch: 1–6 eggs
Light sky blue, sometimes with dark-brown speckles.
Sources of information
- Size
- Average of 38 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 87.
Agrees with: Cornell Lab of Ornithology, All About Birds: Varied Thrush, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Varied Thrush, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Veery
Catharus fuscescens
- 22.4 × 16.7 mm
- Clutch: 1–5 eggs
Greenish blue, rarely spotted with brown.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 221.
Agrees with: Cornell Lab of Ornithology, All About Birds: Veery, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Veery, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Western Bluebird
Sialia mexicana
- 20.8 × 16.2 mm
- Clutch: 2–8 eggs
Pale blue and unmarked, sometimes white.
Sources of information
- Size
- Wikipedia: Western bluebird.
- Description
- Cornell Lab of Ornithology, All About Birds: Western Bluebird, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Wood Thrush
Hylocichla mustelina
- 25.4 × 18.6 mm
- Clutch: 3–4 eggs
Turquoise-green with no marking.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Thrushes, Kinglets, and Their Allies (U.S. National Museum Bulletin 196, 1949), p. 107.
Agrees with: Cornell Lab of Ornithology, All About Birds: Wood Thrush, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Wood Thrush, 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).
Make a 3D-printable copy of this egg →See posters with this egg →