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Eggs

Illustration of a Mourning Sierra Finch (Rhopospina fruticeti) egg, 24.87 × 17.45 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Rhopospina fruticeti

  • 24.87 × 17.45 mm
  • Clutch: 2 eggs
Breeds in Argentina, Bolivia, Chile, Peru

Pale blue-green, densely speckled all over with brown and grey.

Sources of information

Size
Average of 5 eggs: Stoddard, M. C., et al. 2017. Avian egg shape: form, function, and evolution. Science 356: 1249-1254 (Data S1, MVZ egg collection).
Description
de la Peña 2025 (Aves Argentinas tomo 12).
Drawing checked against a photo: de la Peña 2025, Aves Argentinas tomo 12, p. 68.
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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