22 eggs at true relative size, from the 19.35 mm egg of the Downy Woodpecker to the 33.16 mm egg of the Pileated Woodpecker.
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.
Acorn Woodpecker
Melanerpes formicivorus
- 25.98 × 19.78 mm
- Clutch: 3–6 eggs
White.
Sources of information
- Size
- Average of 52 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 214.
Agrees with: Cornell Lab of Ornithology, All About Birds: Acorn Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Acorn Woodpecker, 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).
American Three-toed Woodpecker
Picoides dorsalis
- 23.32 × 18.01 mm
- Clutch: 3–7 eggs
White, rather round.
Sources of information
- Size
- Average of 48 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 118.
- Description
- Cornell Lab of Ornithology, All About Birds: American Three-toed Woodpecker, 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 →
Arizona Woodpecker
Dryobates arizonae
- 22.82 × 17.33 mm
- Clutch: 2–4 eggs
White.
Sources of information
- Size
- Average of 27 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 93.
- Description
- Cornell Lab of Ornithology, All About Birds: Arizona Woodpecker, 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).
Black-backed Woodpecker
Picoides arcticus
- 24.38 × 18.29 mm
- Clutch: 2–6 eggs
White.
Sources of information
- Size
- Average of 13 eggs: Bendire, Life Histories of North American Birds, Vol. 2 (1895), p. 76.
Agrees with: Cornell Lab of Ornithology, All About Birds: Black-backed Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Black-backed Woodpecker, 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 →
Downy Woodpecker
Dryobates pubescens
- 19.35 × 15.05 mm
- Clutch: 3–8 eggs
Completely white.
Sources of information
- Size
- Average of 55 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 57.
Agrees with: Cornell Lab of Ornithology, All About Birds: Downy Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Downy Woodpecker, 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 →
Gila Woodpecker
Melanerpes uropygialis
- 25.14 × 18.56 mm
- Clutch: 3–6 eggs
White.
Sources of information
- Size
- Average of 52 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 253.
Agrees with: Cornell Lab of Ornithology, All About Birds: Gila Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Gila Woodpecker, 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).
Gilded Flicker
Colaptes chrysoides
- 27.86 × 21.34 mm
- Clutch: 4–5 eggs
White.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 303.
Agrees with: Cornell Lab of Ornithology, All About Birds: Gilded Flicker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Gilded Flicker, 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).
Golden-fronted Woodpecker
Melanerpes aurifrons
- 25.82 × 19.5 mm
- Clutch: 4–7 eggs
White.
Sources of information
- Size
- Average of 59 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 247.
Agrees with: Cornell Lab of Ornithology, All About Birds: Golden-fronted Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Golden-fronted Woodpecker, 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).
Hairy Woodpecker
Leuconotopicus villosus
- 23.81 × 18.04 mm
- Clutch: 3–6 eggs
All white.
Sources of information
- Size
- Average of 47 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 16.
Agrees with: Cornell Lab of Ornithology, All About Birds: Hairy Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Hairy Woodpecker, 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 →
Ladder-backed Woodpecker
Dryobates scalaris
- 20.5 × 15.83 mm
- Clutch: 2–7 eggs
White and unmarked.
Sources of information
- Size
- Average of 51 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 80.
Agrees with: Cornell Lab of Ornithology, All About Birds: Ladder-backed Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Ladder-backed Woodpecker, 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).
Lewis's Woodpecker
Melanerpes lewis
- 26.22 × 19.99 mm
- Clutch: 5–9 eggs
Opaque white.
Sources of information
- Size
- Average of 58 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 229.
Agrees with: Cornell Lab of Ornithology, All About Birds: Lewis's Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Lewis's Woodpecker, 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 →
Northern Flicker
Colaptes auratus
- 26.85 × 20.58 mm
- Clutch: 5–8 eggs
All white.
Sources of information
- Size
- Average of 57 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 273.
- Description
- Cornell Lab of Ornithology, All About Birds: Northern Flicker, 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 →
Nuttall's Woodpecker
Dryobates nuttallii
- 21.75 × 16.27 mm
- Clutch: 3–6 eggs
White and unmarked.
Sources of information
- Size
- Average of 47 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 88.
Agrees with: Cornell Lab of Ornithology, All About Birds: Nuttall's Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Nuttall's Woodpecker, 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).
Pileated Woodpecker
Dryocopus pileatus
- 33.16 × 25.21 mm
- Clutch: 3–5 eggs
White.
Sources of information
- Size
- Average of 51 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 179.
Agrees with: Cornell Lab of Ornithology, All About Birds: Pileated Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Pileated Woodpecker, 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 →
Red-bellied Woodpecker
Melanerpes carolinus
- 26.06 × 18.78 mm
- Clutch: 2–6 eggs
Smooth white.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 239.
Agrees with: Cornell Lab of Ornithology, All About Birds: Red-bellied Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Red-bellied Woodpecker, 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 →
Red-breasted Sapsucker
Sphyrapicus ruber
- 23.61 × 17.51 mm
- Clutch: 4–7 eggs
White.
Sources of information
- Size
- Average of 54 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 153.
Agrees with: Cornell Lab of Ornithology, All About Birds: Red-breasted Sapsucker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Red-breasted Sapsucker, 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 →
Red-cockaded Woodpecker
Dryobates borealis
- 24.07 × 17.46 mm
- Clutch: 2–5 eggs
Shiny white.
Sources of information
- Size
- Average of 23 eggs: Bendire, Life Histories of North American Birds, Vol. 2 (1895), p. 62.
Agrees with: Cornell Lab of Ornithology, All About Birds: Red-cockaded Woodpecker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Red-cockaded Woodpecker, 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).
Red-headed Woodpecker
Melanerpes erythrocephalus
- 25.12 × 19.25 mm
- Clutch: 3–10 eggs
Pure white.
Sources of information
- Size
- Average of 60 eggs: Bendire, Life Histories of North American Birds, Vol. 2 (1895), p. 112.
- Description
- Cornell Lab of Ornithology, All About Birds: Red-headed Woodpecker, 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 →
Red-naped Sapsucker
Sphyrapicus nuchalis
- 22.89 × 17.28 mm
- Clutch: 3–7 eggs
White.
Sources of information
- Size
- Average of 40 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 144.
Agrees with: Cornell Lab of Ornithology, All About Birds: Red-naped Sapsucker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Red-naped Sapsucker, 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 →
White-headed Woodpecker
Dryobates albolarvatus
- 24.26 × 18.11 mm
- Clutch: 2–9 eggs
White.
Sources of information
- Size
- Average of 50 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 99.
- Description
- Cornell Lab of Ornithology, All About Birds: White-headed Woodpecker, 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).
Williamson's Sapsucker
Sphyrapicus thyroideus
- 23.54 × 17.23 mm
Glossy white.
Sources of information
- Size
- Average of 30 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 157.
- Description
- Cornell Lab of Ornithology, All About Birds: Williamson's Sapsucker, Life History.
- Shape
- Drawn from the length and width, with the taper estimated from the typical eggs of its group (how these eggs are drawn).
Yellow-bellied Sapsucker
Sphyrapicus varius
- 22.44 × 16.92 mm
- Clutch: 4–6 eggs
White.
Sources of information
- Size
- Average of 52 eggs: Bent, Life Histories of North American Woodpeckers (U.S. National Museum Bulletin 174, 1939), p. 130.
Agrees with: Cornell Lab of Ornithology, All About Birds: Yellow-bellied Sapsucker, Life History. - Description
- Cornell Lab of Ornithology, All About Birds: Yellow-bellied Sapsucker, 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 →