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Eggs

Illustration of a Fuegian Steamer Duck (Tachyeres pteneres) egg, 85.6 × 54.5 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Tachyeres pteneres

  • 85.6 × 54.5 mm
  • Clutch: 6–8 eggs
Breeds in Argentina, Chile

Whitish ochre, unmarked.

Sources of information

Size
Average of 6 eggs: de la Peña, M. R. 2025. Aves Argentinas: descripción, comportamiento, reproducción y distribución. Comunicaciones del Museo Provincial de Ciencias Naturales "Florentino Ameghino" (Nueva Serie). Santa Fe., tomo 1, p. 175.
Description
de la Peña 2025 (Aves Argentinas tomo 1).
Drawing checked against a photo: de la Peña 2025, Aves Argentinas tomo 1, p. 176.
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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