19 eggs at true relative size, from the 14.7 mm egg of the Lesser Goldfinch to the 26 mm egg of the Pine Grosbeak.
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 Goldfinch
Spinus tristis
- 16.2 × 12.2 mm
- Clutch: 2–7 eggs
Pale bluish white, sometimes with small faint brown spots around large end.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 456.
Agrees with: Cornell Lab of Ornithology, All About Birds: American Goldfinch, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: American Goldfinch, 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 →
Black Rosy-Finch
Leucosticte atrata
- 22.1 × 16 mm
- Clutch: 3–6 eggs
White.
Sources of information
- Size
- Average of 16 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 367.
Agrees with: Cornell Lab of Ornithology, All About Birds: Black Rosy-Finch, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Black Rosy-Finch, 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-capped Rosy-Finch
Leucosticte australis
- 22.7 × 15.6 mm
- Clutch: 3–6 eggs
White.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 376.
- Description
- Cornell Lab of Ornithology, All About Birds: Brown-capped Rosy-Finch, 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).
Cassin's Finch
Haemorhous cassinii
- 20.3 × 14.7 mm
- Clutch: 3–6 eggs
Light greenish blue, speckled with black, brown and purplish.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 283.
Agrees with: Cornell Lab of Ornithology, All About Birds: Cassin's Finch, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Cassin's Finch, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Common Redpoll
Acanthis flammea
- 16.9 × 12.2 mm
- Clutch: 1–7 eggs
Pale green to pale blue, with dark spots.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 411.
Agrees with: Cornell Lab of Ornithology, All About Birds: Common Redpoll, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Common Redpoll, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Eurasian Tree Sparrow
Passer montanus
- 19.5 × 14 mm
- Clutch: 4–7 eggs
White to pale gray, heavily marked with spots, small blotches, or speckling.
Sources of information
- Size
- Average of 103 eggs: Witherby, A Practical Handbook of British Birds (1920) (103 eggs).
- Description
- Cornell Lab of Ornithology, All About Birds: Eurasian Tree Sparrow, Life History.
Drawing checked against a photo: Wikimedia Commons photo. - 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).
Evening Grosbeak
Hesperiphona vespertina
- 24.5 × 17.5 mm
- Clutch: 2–5 eggs
Light blue to blue-green with brown or purplish blotches.
Sources of information
- Size
- Average of 23 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 214.
Agrees with: Cornell Lab of Ornithology, All About Birds: Evening Grosbeak, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Evening Grosbeak, 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 →
Gray-crowned Rosy-Finch
Leucosticte tephrocotis
- 24.5 × 17.3 mm
- Clutch: 2–6 eggs
White and unmarked, or with some reddish or brownish specks.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 351.
- Description
- Cornell Lab of Ornithology, All About Birds: Gray-crowned Rosy-Finch, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Hoary Redpoll
Acanthis hornemanni
- 16.7 × 12.5 mm
- Clutch: 1–7 eggs
Pale green to pale blue, with dark spots.
Sources of information
- Size
- Average of 40 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 402.
Agrees with: Cornell Lab of Ornithology, All About Birds: Hoary Redpoll, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Hoary Redpoll, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
House Finch
Haemorhous mexicanus
- 18.8 × 13.8 mm
- Clutch: 2–6 eggs
Pale blue to white, speckled with fine black and pale purple.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 299.
Agrees with: Cornell Lab of Ornithology, All About Birds: House Finch, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: House Finch, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
House Sparrow
Passer domesticus
- 21 × 15 mm
- Clutch: 1–8 eggs
Light white to greenish white or bluish white, usually spotted with gray or brown.
Sources of information
- Size
- Cornell Lab of Ornithology, All About Birds: House Sparrow, Life History.
- Description
- Cornell Lab of Ornithology, All About Birds: House Sparrow, Life History.
Drawing checked against a photo: Wikimedia Commons 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 →
Lawrence's Goldfinch
Spinus lawrencei
- 15.4 × 11.6 mm
- Clutch: 3–6 eggs
White and unmarked; sometimes very pale blue.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 491.
- Description
- Cornell Lab of Ornithology, All About Birds: Lawrence's Goldfinch, 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).
Lesser Goldfinch
Spinus psaltria
- 14.7 × 11.2 mm
- Clutch: 3–6 eggs
Pale blue-white and unmarked.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 480.
- Description
- Cornell Lab of Ornithology, All About Birds: Lesser Goldfinch, 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).
Pine Grosbeak
Pinicola enucleator
- 26 × 18.3 mm
- Clutch: 3–4 eggs
Pale blue with darker dots and markings.
Sources of information
- Size
- Average of 40 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 328.
- Description
- Cornell Lab of Ornithology, All About Birds: Pine Grosbeak, 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 →
Pine Siskin
Spinus pinus
- 16.6 × 12.4 mm
- Clutch: 3–5 eggs
Pale greenish-blue with brown or reddish-brown spotting.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 433.
Agrees with: Cornell Lab of Ornithology, All About Birds: Pine Siskin, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Pine Siskin, 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 →
Purple Finch
Haemorhous purpureus
- 20.2 × 14.6 mm
- Clutch: 2–7 eggs
Pale greenish blue marked with brown and black.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 267.
Agrees with: Cornell Lab of Ornithology, All About Birds: Purple Finch, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Purple Finch, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Red Crossbill
Loxia curvirostra
- 20.4 × 14.8 mm
- Clutch: 2–6 eggs
Whitish, with reddish streaks and splotches concentrated around large end.
Sources of information
- Size
- Average of 37 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 506.
- Description
- Cornell Lab of Ornithology, All About Birds: Red Crossbill, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
White-winged Crossbill
Loxia leucoptera
- 20.9 × 15 mm
- Clutch: 2–4 eggs
Bluish green to white with dark spots or blotches around large end.
Sources of information
- Size
- Average of 19 eggs: Bent, Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies (U.S. National Museum Bulletin 237, Part 1, 1968), p. 532.
Agrees with: Cornell Lab of Ornithology, All About Birds: White-winged Crossbill, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: White-winged Crossbill, 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).
Make a 3D-printable copy of this egg →See posters with this egg →
Zebra Finch
Taeniopygia guttata
- 15 × 11 mm
White, faint bluish tint.
Sources of information
- Size
- Estimated: typical size from general references.
- Description
- SaviMade's description of a typical egg.
- Shape
- Drawn from the length and width, with the taper estimated from the typical eggs of its group (how these eggs are drawn).