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Illustration of a Bright-rumped Yellow Finch (Sicalis uropygialis) egg, 20.8 × 14.9 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Sicalis uropygialis

  • 20.8 × 14.9 mm
Breeds in Argentina, Bolivia, Chile, Peru

Pale bluish white, speckled with brown and grey, more near the larger end; slightly glossy.

Sources of information

Size
Average of 6 eggs: Schönwetter, M. 1960–1992. Handbuch der Oologie (ed. W. Meise), Lieferung 29–36. Akademie-Verlag, Berlin., p. 257.
Description
Ogilvie-Grant 1912 (BM Egg Catalogue vol 5).
Drawing checked against a photo: de la Peña 2025, Aves Argentinas tomo 12, p. 16.
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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