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Illustration of a Grey-rumped Swift (Chaetura cinereiventris) egg, 21.8 × 16.3 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Chaetura cinereiventris

  • 21.8 × 16.3 mm
  • Speculative: we haven't found a description of this egg (a source we checked reports it as undescribed), so we estimated its colours and markings from related birds.
Breeds in Central America (4 countries), the Caribbean and South America (9 countries)
show all 15Central America: Costa Rica, Honduras, Nicaragua, Panama
The Caribbean: Trinidad and Tobago, Caribbean islands
South America: Argentina, Bolivia, Brazil, Colombia, Ecuador, Guyana, Paraguay, 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 2 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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