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Illustration of a Chestnut-collared Swift (Streptoprocne rutila) egg, 22.9 × 14.5 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Streptoprocne rutila

  • 22.9 × 14.5 mm
  • Its colour follows its family (the eggs of all its relatives are alike); we haven't found a description of this species' own egg yet.
Breeds in Mexico, Central America (7 countries), Trinidad and Tobago and South America (5 countries)
show all 14Mexico: Mexico
Central America: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama
The Caribbean: Trinidad and Tobago
South America: Bolivia, Colombia, Ecuador, Peru, Venezuela

Plain white, as in all swift eggs (we haven't found a description of this species' own egg yet).

Sources of information

Size
Average of 5 eggs: Schönwetter, M. 1960–1992. Handbuch der Oologie (ed. W. Meise), Lieferung 11. Akademie-Verlag, Berlin., p. 658.
Description
Oates, E. W. & S. G. Reid 1903. Catalogue of the Collection of Birds' Eggs in the British Museum, vol. 3. London.
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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