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Illustration of a Mottled Owl (Strix virgata) egg, 42.2 × 36.1 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Strix virgata

  • 42.2 × 36.1 mm
  • Clutch: 2–3 eggs
Breeds in Mexico, Central America (7 countries), Trinidad and Tobago and South America (11 countries)
show all 20Mexico: Mexico
Central America: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama
The Caribbean: Trinidad and Tobago
South America: Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, Venezuela

Off-white, unmarked and non-glossy; elliptical, only slightly longer than broad.

Sources of information

Size
Average of 16 eggs: Gerhardt, R. P., N. Bonilla Gonzalez, D. M. Gerhardt & C. J. Flatten. 1994. Breeding biology and home range of two Ciccaba owls. Wilson Bulletin 106: 629-639, p. 631.
Description
Gerhardt, R. P., N. Bonilla Gonzalez, D. M. Gerhardt & C. J. Flatten. 1994. Breeding biology and home range of two Ciccaba owls. Wilson Bulletin 106: 629-639, p. 631.
Agrees with: Gerhardt, R. P. 1991. Mottled Owls (Ciccaba virgata): response to calls, breeding biology, home range, and food habits. M.S. thesis, Boise State University (abstract only: 7 cavity nests, mean clutch 2.14).
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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