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Bird eggs

48 eggs at true relative size, from the 45.8 mm egg of the Green-winged Teal to the 113.5 mm egg of the Trumpeter Swan.

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.

Make a poster of these 48 eggs
Trumpeter Swan egg, 113.5 × 71.5 mm Tundra Swan egg, 106.9 × 68.2 mm Mute Swan egg, 103 × 66.5 mm Canada Goose egg, 85.7 × 58.2 mm Domestic Goose egg, 81.2 × 54.3 mm Greater White-fronted Goose egg, 79 × 52.5 mm Emperor Goose egg, 78.6 × 52.1 mm Snow Goose egg, 78.6 × 52.3 mm Common Eider egg, 76 × 50.7 mm Ross's Goose egg, 74 × 47 mm Cackling Goose egg, 72.7 × 48 mm Brant egg, 71.7 × 47.1 mm King Eider egg, 67.6 × 44.7 mm Muscovy Duck egg, 66.5 × 45.5 mm Spectacled Eider egg, 65.4 × 44.6 mm White-winged Scoter egg, 65.3 × 45.7 mm Domestic Duck egg, 65 × 44 mm Red-breasted Merganser egg, 64.5 × 45 mm Common Merganser egg, 64.3 × 44.9 mm Greater Scaup egg, 62.4 × 43.7 mm Ruddy Duck egg, 62.3 × 45.6 mm Canvasback egg, 62.2 × 43.7 mm Black Scoter egg, 61.9 × 41.7 mm Surf Scoter egg, 61.6 × 43 mm Steller's Eider egg, 61.4 × 42 mm Barrow's Goldeneye egg, 61.3 × 44 mm Redhead egg, 61.2 × 43.4 mm Common Goldeneye egg, 59.7 × 43.4 mm American Black Duck egg, 59.4 × 43.2 mm Mallard egg, 57.8 × 41.6 mm Harlequin Duck egg, 57.5 × 41.5 mm Ring-necked Duck egg, 57.5 × 39.8 mm Mexican Duck egg, 57.2 × 41.9 mm Lesser Scaup egg, 57.1 × 39.7 mm Gadwall egg, 55.3 × 39.7 mm Mottled Duck egg, 54.9 × 40.5 mm Northern Pintail egg, 54.9 × 38.2 mm American Wigeon egg, 53.9 × 38.3 mm Fulvous Whistling-Duck egg, 53.4 × 40.7 mm Long-tailed Duck egg, 53 × 37 mm Hooded Merganser egg, 52.5 × 46.5 mm Black-bellied Whistling-Duck egg, 52.3 × 38.3 mm Northern Shoveler egg, 52.2 × 37 mm Wood Duck egg, 51.1 × 38.8 mm Bufflehead egg, 48.5 × 34.7 mm Cinnamon Teal egg, 47.5 × 34.5 mm Blue-winged Teal egg, 46.6 × 33.4 mm Green-winged Teal egg, 45.8 × 34.2 mm
All 48 eggs at the same scale, largest first. Tap an egg to jump to it.
American Black Duck egg, 59.4 × 43.2 mm

American Black Duck

Anas rubripes

  • 59.4 × 43.2 mm
  • Clutch: 6–14 eggs

White, cream-colored, or pale greenish buff.

Sources of information

Size
Average of 82 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 54.
Agrees with: Cornell Lab of Ornithology, All About Birds: American Black Duck, Life History.
Description
Cornell Lab of Ornithology, All About Birds: American Black Duck, 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).

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American Wigeon egg, 53.9 × 38.3 mm

American Wigeon

Mareca americana

  • 53.9 × 38.3 mm
  • Clutch: 3–13 eggs

Creamy white.

Sources of information

Size
Average of 81 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 92.
Description
Cornell Lab of Ornithology, All About Birds: American Wigeon, 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).

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Barrow's Goldeneye egg, 61.3 × 44 mm

Barrow's Goldeneye

Bucephala islandica

  • 61.3 × 44 mm
  • Clutch: 6–12 eggs

Glossy greenish.

Sources of information

Size
Average of 79 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 18.
Agrees with: Cornell Lab of Ornithology, All About Birds: Barrow's Goldeneye, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Barrow's Goldeneye, 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).

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Black Scoter egg, 61.9 × 41.7 mm

Black Scoter

Melanitta americana

  • 61.9 × 41.7 mm
  • Clutch: 8–9 eggs

Off-white to pinkish buff.

Sources of information

Size
Average of 58 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 121.
Description
Cornell Lab of Ornithology, All About Birds: Black Scoter, 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).

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Black-bellied Whistling-Duck egg, 52.3 × 38.3 mm

Black-bellied Whistling-Duck

Dendrocygna autumnalis

  • 52.3 × 38.3 mm
  • Clutch: 9–18 eggs

White.

Sources of information

Size
Average of 99 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 270.
Agrees with: Cornell Lab of Ornithology, All About Birds: Black-bellied Whistling-Duck, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Black-bellied Whistling-Duck, 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).

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Blue-winged Teal egg, 46.6 × 33.4 mm

Blue-winged Teal

Spatula discors

  • 46.6 × 33.4 mm
  • Clutch: 6–14 eggs

Creamy white.

Sources of information

Size
Average of 93 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 114.
Agrees with: Cornell Lab of Ornithology, All About Birds: Blue-winged Teal, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Blue-winged Teal, 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).

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Brant egg, 71.7 × 47.1 mm

Brant

Branta bernicla

  • 71.7 × 47.1 mm
  • Clutch: 3–5 eggs

Buffy, creamy white, or pale olive.

Sources of information

Size
Average of 54 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 242.
Description
Cornell Lab of Ornithology, All About Birds: Brant, 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).

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Bufflehead egg, 48.5 × 34.7 mm

Bufflehead

Bucephala albeola

  • 48.5 × 34.7 mm
  • Clutch: 4–17 eggs

Cream-colored or buff; unmarked.

Sources of information

Size
Average of 86 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 27.
Description
Cornell Lab of Ornithology, All About Birds: Bufflehead, 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).

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Cackling Goose egg, 72.7 × 48 mm

Cackling Goose

Branta hutchinsii

  • 72.7 × 48 mm
  • Clutch: 2–8 eggs

Creamy white.

Sources of information

Size
Average of 110 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 233.
Description
Cornell Lab of Ornithology, All About Birds: Cackling Goose, 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).

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Canada Goose egg, 85.7 × 58.2 mm

Canada Goose

Branta canadensis

  • 85.7 × 58.2 mm
  • Clutch: 2–8 eggs

Creamy white.

Sources of information

Size
Average of 84 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 209.
Description
Cornell Lab of Ornithology, All About Birds: Canada Goose, 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).

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Canvasback egg, 62.2 × 43.7 mm

Canvasback

Aythya valisineria

  • 62.2 × 43.7 mm
  • Clutch: 5–11 eggs

Greenish drab.

Sources of information

Size
Average of 88 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 194.
Agrees with: Cornell Lab of Ornithology, All About Birds: Canvasback, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Canvasback, 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).

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Cinnamon Teal egg, 47.5 × 34.5 mm

Cinnamon Teal

Spatula cyanoptera

  • 47.5 × 34.5 mm
  • Clutch: 4–16 eggs

Creamy white.

Sources of information

Size
Average of 90 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 124.
Agrees with: Cornell Lab of Ornithology, All About Birds: Cinnamon Teal, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Cinnamon Teal, 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).

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Common Eider egg, 76 × 50.7 mm

Common Eider

Somateria mollissima

  • 76 × 50.7 mm
  • Clutch: 3–8 eggs

Olive or greenish, usually unmarked.

Sources of information

Size
Average of 59 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 98.
Agrees with: Cornell Lab of Ornithology, All About Birds: Common Eider, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Common Eider, 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).

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Common Goldeneye egg, 59.7 × 43.4 mm

Common Goldeneye

Bucephala clangula

  • 59.7 × 43.4 mm
  • Clutch: 4–9 eggs

Greenish, ranging from bluish green to olive-green.

Sources of information

Size
Average of 84 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 5.
Agrees with: Cornell Lab of Ornithology, All About Birds: Common Goldeneye, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Common Goldeneye, 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).

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Common Merganser egg, 64.3 × 44.9 mm

Common Merganser

Mergus merganser

  • 64.3 × 44.9 mm
  • Clutch: 6–17 eggs

White, creamy, or ivory yellow.

Sources of information

Size
Average of 93 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 5.
Agrees with: Cornell Lab of Ornithology, All About Birds: Common Merganser, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Common Merganser, 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).

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Emperor Goose egg, 78.6 × 52.1 mm

Emperor Goose

Anser canagicus

  • 78.6 × 52.1 mm
  • Clutch: 3–5 eggs

Creamy white or dull white.

Sources of information

Size
Average of 96 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 265.
Description
Cornell Lab of Ornithology, All About Birds: Emperor Goose, 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).

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Fulvous Whistling-Duck egg, 53.4 × 40.7 mm

Fulvous Whistling-Duck

Dendrocygna bicolor

  • 53.4 × 40.7 mm
  • Clutch: 2–44 eggs

White to buffy white.

Sources of information

Size
Average of 212 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 275.
Agrees with: Cornell Lab of Ornithology, All About Birds: Fulvous Whistling-Duck, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Fulvous Whistling-Duck, 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).

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Gadwall egg, 55.3 × 39.7 mm

Gadwall

Mareca strepera

  • 55.3 × 39.7 mm
  • Clutch: 7–12 eggs

Dull creamy white.

Sources of information

Size
Average of 100 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 81.
Agrees with: Cornell Lab of Ornithology, All About Birds: Gadwall, Life History.
Description
Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 81.
Shape
Drawn from the length and width, with the taper estimated from the typical eggs of its group (how these eggs are drawn).

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Greater Scaup egg, 62.4 × 43.7 mm

Greater Scaup

Aythya marila

  • 62.4 × 43.7 mm
  • Clutch: 5–13 eggs

Brownish olive-buff.

Sources of information

Size
Average of 180 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 209.
Agrees with: Cornell Lab of Ornithology, All About Birds: Greater Scaup, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Greater Scaup, 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).

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Greater White-fronted Goose egg, 79 × 52.5 mm

Greater White-fronted Goose

Anser albifrons

  • 79 × 52.5 mm
  • Clutch: 1–8 eggs

White to tan, stained during incubation.

Sources of information

Size
Average of 109 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 190.
Description
Cornell Lab of Ornithology, All About Birds: Greater White-fronted Goose, 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).

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Green-winged Teal egg, 45.8 × 34.2 mm

Green-winged Teal

Anas crecca

  • 45.8 × 34.2 mm
  • Clutch: 6–9 eggs

Creamy white to pale olive-buff.

Sources of information

Size
Average of 93 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 105.
Agrees with: Cornell Lab of Ornithology, All About Birds: Green-winged Teal, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Green-winged Teal, 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).

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Harlequin Duck egg, 57.5 × 41.5 mm

Harlequin Duck

Histrionicus histrionicus

  • 57.5 × 41.5 mm
  • Clutch: 4–8 eggs

Pale creamy to pale buff.

Sources of information

Size
Average of 90 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 52.
Description
Cornell Lab of Ornithology, All About Birds: Harlequin Duck, 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).

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Hooded Merganser egg, 52.5 × 46.5 mm

Hooded Merganser

Lophodytes cucullatus

  • 52.5 × 46.5 mm
  • Clutch: 5–13 eggs

White, nearly spherical, and unusually thick shelled.

Sources of information

Size
Cornell Lab of Ornithology, All About Birds: Hooded Merganser, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Hooded Merganser, 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).

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King Eider egg, 67.6 × 44.7 mm

King Eider

Somateria spectabilis

  • 67.6 × 44.7 mm
  • Clutch: 2–7 eggs

Olive or olive-buff.

Sources of information

Size
Average of 152 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 111.
Description
Cornell Lab of Ornithology, All About Birds: King Eider, 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).

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Lesser Scaup egg, 57.1 × 39.7 mm

Lesser Scaup

Aythya affinis

  • 57.1 × 39.7 mm
  • Clutch: 6–14 eggs

Pale to dark olive or greenish buff.

Sources of information

Size
Average of 88 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 219.
Description
Cornell Lab of Ornithology, All About Birds: Lesser Scaup, 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).

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Long-tailed Duck egg, 53 × 37 mm

Long-tailed Duck

Clangula hyemalis

  • 53 × 37 mm
  • Clutch: 6–9 eggs

Pale gray to olive.

Sources of information

Size
Average of 139 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 38.
Agrees with: Cornell Lab of Ornithology, All About Birds: Long-tailed Duck, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Long-tailed Duck, 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).

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Mallard egg, 57.8 × 41.6 mm

Mallard

Anas platyrhynchos

  • 57.8 × 41.6 mm
  • Clutch: 1–13 eggs

Unmarked creamy to grayish or greenish buff.

Sources of information

Size
Average of 93 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 39.
Agrees with: Cornell Lab of Ornithology, All About Birds: Mallard, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Mallard, 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).

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Mexican Duck egg, 57.2 × 41.9 mm

Mexican Duck

Anas diazi

  • 57.2 × 41.9 mm
  • Clutch: 2–10 eggs

White, with a faint bluish-green hue.

Sources of information

Size
Ducks Unlimited: Mexican Duck (middle of the published range, 2.1–2.4 × 1.6–1.7 in).
Description
Cornell Lab of Ornithology, All About Birds: Mexican Duck, 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).

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Mottled Duck egg, 54.9 × 40.5 mm

Mottled Duck

Anas fulvigula

  • 54.9 × 40.5 mm
  • Clutch: 8–12 eggs

Dull white to olive.

Sources of information

Size
Average of 75 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 74.
Description
Cornell Lab of Ornithology, All About Birds: Mottled Duck, 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).

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Muscovy Duck egg, 66.5 × 45.5 mm

Muscovy Duck

Cairina moschata

  • 66.5 × 45.5 mm
  • Clutch: 8–15 eggs

Creamy white with a greenish tint.

Sources of information

Size
Cornell Lab of Ornithology, All About Birds: Muscovy Duck, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Muscovy Duck, 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).

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Mute Swan egg, 103 × 66.5 mm

Mute Swan

Cygnus olor

  • 103 × 66.5 mm
  • Clutch: 2–5 eggs

Blue-green when laid, changing to white and chalky; sometimes stained olive-brown.

Sources of information

Size
Cornell Lab of Ornithology, All About Birds: Mute Swan, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Mute Swan, 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).

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Northern Pintail egg, 54.9 × 38.2 mm

Northern Pintail

Anas acuta

  • 54.9 × 38.2 mm
  • Clutch: 3–12 eggs

Greenish buff.

Sources of information

Size
Average of 102 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 148.
Agrees with: Cornell Lab of Ornithology, All About Birds: Northern Pintail, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Northern Pintail, 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).

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Northern Shoveler egg, 52.2 × 37 mm

Northern Shoveler

Spatula clypeata

  • 52.2 × 37 mm
  • Clutch: 8–12 eggs

Pale greenish gray or olive-buff.

Sources of information

Size
Average of 177 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 138.
Agrees with: Cornell Lab of Ornithology, All About Birds: Northern Shoveler, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Northern Shoveler, 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).

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Red-breasted Merganser egg, 64.5 × 45 mm

Red-breasted Merganser

Mergus serrator

  • 64.5 × 45 mm
  • Clutch: 3–24 eggs

Olive-buff.

Sources of information

Size
Average of 85 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 16.
Agrees with: Cornell Lab of Ornithology, All About Birds: Red-breasted Merganser, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Red-breasted Merganser, 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).

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Redhead egg, 61.2 × 43.4 mm

Redhead

Aythya americana

  • 61.2 × 43.4 mm
  • Clutch: 7–8 eggs

Creamy white to pale, olive buff or sometimes pale, buffy brown.

Sources of information

Size
Average of 79 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 179.
Agrees with: Cornell Lab of Ornithology, All About Birds: Redhead, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Redhead, 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).

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Ring-necked Duck egg, 57.5 × 39.8 mm

Ring-necked Duck

Aythya collaris

  • 57.5 × 39.8 mm
  • Clutch: 6–14 eggs

Olive-gray to olive-buff.

Sources of information

Size
Average of 75 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 226.
Description
Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 226.
Shape
Drawn from the length and width, with the taper estimated from the typical eggs of its group (how these eggs are drawn).

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Ross's Goose egg, 74 × 47 mm

Ross's Goose

Anser rossii

  • 74 × 47 mm
  • Clutch: 2–6 eggs

White, usually stained during incubation.

Sources of information

Size
Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 186.
Agrees with: Cornell Lab of Ornithology, All About Birds: Ross's Goose, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Ross's Goose, 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).

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Ruddy Duck egg, 62.3 × 45.6 mm

Ruddy Duck

Oxyura jamaicensis

  • 62.3 × 45.6 mm
  • Clutch: 3–13 eggs

White to yellowish white, with a pebbly texture.

Sources of information

Size
Average of 80 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 155.
Agrees with: Cornell Lab of Ornithology, All About Birds: Ruddy Duck, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Ruddy Duck, 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).

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Snow Goose egg, 78.6 × 52.3 mm

Snow Goose

Anser caerulescens

  • 78.6 × 52.3 mm
  • Clutch: 2–6 eggs

Elongated oval with variable texture. Creamy white but easily staining to dirty gray.

Sources of information

Size
Average of 103 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 166.
Description
Cornell Lab of Ornithology, All About Birds: Snow Goose, 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).

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Spectacled Eider egg, 65.4 × 44.6 mm

Spectacled Eider

Somateria fischeri

  • 65.4 × 44.6 mm
  • Clutch: 1–11 eggs

Pale green or light buff.

Sources of information

Size
Average of 101 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 76.
Description
Cornell Lab of Ornithology, All About Birds: Spectacled Eider, 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).

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Surf Scoter egg, 61.6 × 43 mm

Surf Scoter

Melanitta perspicillata

  • 61.6 × 43 mm
  • Clutch: 6–9 eggs

Creamy white.

Sources of information

Size
Average of 33 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 147.
Description
Cornell Lab of Ornithology, All About Birds: Surf Scoter, 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).

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Trumpeter Swan egg, 113.5 × 71.5 mm

Trumpeter Swan

Cygnus buccinator

  • 113.5 × 71.5 mm
  • Clutch: 4–6 eggs

Creamy to dull white, often stained brown in the nest.

Sources of information

Size
Cornell Lab of Ornithology, All About Birds: Trumpeter Swan, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Trumpeter Swan, 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).

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Tundra Swan egg, 106.9 × 68.2 mm

Tundra Swan

Cygnus columbianus

  • 106.9 × 68.2 mm
  • Clutch: 3–5 eggs

Creamy white, often stained tan by nest material.

Sources of information

Size
Average of 94 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 284.
Agrees with: Cornell Lab of Ornithology, All About Birds: Tundra Swan, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Tundra Swan, 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).

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White-winged Scoter egg, 65.3 × 45.7 mm

White-winged Scoter

Melanitta deglandi

  • 65.3 × 45.7 mm
  • Clutch: 6–16 eggs

Creamy buff or light pink.

Sources of information

Size
Average of 71 eggs: Bent, Life Histories of North American Wild Fowl, Part 2 (U.S. National Museum Bulletin 130, 1925), p. 134.
Description
Cornell Lab of Ornithology, All About Birds: White-winged Scoter, 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).

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Wood Duck egg, 51.1 × 38.8 mm

Wood Duck

Aix sponsa

  • 51.1 × 38.8 mm
  • Clutch: 6–16 eggs

Glossy creamy white to tan.

Sources of information

Size
Average of 99 eggs: Bent, Life Histories of North American Wild Fowl, Part 1 (U.S. National Museum Bulletin 126, 1923), p. 102.
Agrees with: Cornell Lab of Ornithology, All About Birds: Wood Duck, Life History.
Description
Cornell Lab of Ornithology, All About Birds: Wood Duck, 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).

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