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Illustration of a Cocoi Heron (Ardea cocoi) egg, 65.4 × 46.5 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Ardea cocoi

  • 65.4 × 46.5 mm
  • Clutch: 3 eggs
Breeds in Panama and South America (13 countries)
show all 14Central America: Panama
South America: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela

Pale sky blue, unmarked (some paler speckles/whitish traces).

Sources of information

Size
Average of 25 eggs: Schönwetter, M. 1960–1992. Handbuch der Oologie (ed. W. Meise), Lieferung 2. Akademie-Verlag, Berlin., p. 88.
Description
IUCN-SSC Heron Specialist Group, Herons of the World: Cocoi Heron; related: Hellebrekers 1942, Revision of the Penard oölogical collection from Surinam (Zool. Meded. 24).
Drawing checked against a photo: de la Peña 2025, Aves Argentinas tomo 6, p. 217.
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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