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Illustration of a Southern Rough-winged Swallow (Stelgidopteryx ruficollis) egg, 18.5 × 12.83 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Stelgidopteryx ruficollis

  • 18.5 × 12.83 mm
  • Clutch: 4–6 eggs
Breeds in Central America (4 countries), Trinidad and Tobago and South America (12 countries)
show all 17Central America: Costa Rica, Honduras, Nicaragua, Panama
The Caribbean: Trinidad and Tobago
South America: Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela

Immaculate white, smooth, slightly glossy.

Sources of information

Size
Average of 3 eggs: Wetmore, A., R. F. Pasquier & S. L. Olson 1984. The birds of the Republic of Panamá, part 4. Smithsonian Miscellaneous Collections 150(4)., p. 41 (PDF 53).
Description
Wetmore et al. 1984, Birds of Panama pt 4.
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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