7 eggs at true relative size, from the 35 mm egg of the American Kestrel to the 59.4 mm egg of the Crested Caracara.
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 Kestrel
Falco sparverius
- 35 × 29 mm
- Clutch: 4–5 eggs
White to yellowish or light reddish-brown, mottled with violet-magenta, gray, or brown.
Sources of information
- Size
- Average of 169 eggs: Bent, Life Histories of North American Birds of Prey, Part 2 (U.S. National Museum Bulletin 170, 1938), p. 110.
- Description
- Cornell Lab of Ornithology, All About Birds: American Kestrel, 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 →
Aplomado Falcon
Falco femoralis
- 44.5 × 34.5 mm
- Clutch: 2–4 eggs
Whitish with scattered brownish spots.
Sources of information
- Size
- Average of 56 eggs: Bent, Life Histories of North American Birds of Prey, Part 2 (U.S. National Museum Bulletin 170, 1938), p. 97.
Agrees with: Cornell Lab of Ornithology, All About Birds: Aplomado Falcon, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Aplomado Falcon, 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).
Crested Caracara
Caracara plancus
- 59.4 × 46.5 mm
- Clutch: 1–4 eggs
Cinnamon-colored with heavy brown spotting.
Sources of information
- Size
- Average of 57 eggs: Bent, Life Histories of North American Birds of Prey, Part 2 (U.S. National Museum Bulletin 170, 1938), p. 130.
Agrees with: Cornell Lab of Ornithology, All About Birds: Crested Caracara, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Crested Caracara, 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).
Gyrfalcon
Falco rusticolus
- 58.7 × 45.7 mm
- Clutch: 1–5 eggs
Ranging from white to reddish brown, with variable cinnamon spots.
Sources of information
- Size
- Average of 90 eggs: Bent, Life Histories of North American Birds of Prey, Part 2 (U.S. National Museum Bulletin 170, 1938), p. 5.
Agrees with: Cornell Lab of Ornithology, All About Birds: Gyrfalcon, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Gyrfalcon, 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 →
Merlin
Falco columbarius
- 41 × 31 mm
- Clutch: 4–5 eggs
Rusty brown marked with brown or chestnut.
Sources of information
- Size
- Cornell Lab of Ornithology, All About Birds: Merlin, Life History.
- Description
- Cornell Lab of Ornithology, All About Birds: Merlin, 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 →
Peregrine Falcon
Falco peregrinus
- 51 × 43.5 mm
- Clutch: 2–5 eggs
Pale creamy to brownish, dotted or blotched with brown, red, or purple.
Sources of information
- Size
- Cornell Lab of Ornithology, All About Birds: Peregrine Falcon, Life History.
- Description
- Cornell Lab of Ornithology, All About Birds: Peregrine Falcon, 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 →
Prairie Falcon
Falco mexicanus
- 52.3 × 40.5 mm
- Clutch: 2–6 eggs
Creamy white to pink or russet, spotted with brown or cinnamon.
Sources of information
- Size
- Average of 331 eggs: Bent, Life Histories of North American Birds of Prey, Part 2 (U.S. National Museum Bulletin 170, 1938), p. 24.
Agrees with: Cornell Lab of Ornithology, All About Birds: Prairie Falcon, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Prairie Falcon, 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 →