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Eggs

Illustration of a Chestnut-bellied Seedeater (Sporophila castaneiventris) egg, 15.6 × 12.48 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Sporophila castaneiventris

  • 15.6 × 12.48 mm
  • Clutch: 2–3 eggs
Breeds in South America (9 countries)
show all 9South America: Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Venezuela

White, greyish or bluish white, with small and large light to dark brown and reddish-brown spots, black spots and hair lines and purplish undermarks, often in a zone or cap.

Sources of information

Size
Average of 50 eggs: Hellebrekers, W. P. J. 1942. Revision of the Penard oölogical collection from Surinam. Zoologische Mededelingen 24: 240–275., pp. 268–269.
Description
Hellebrekers, W.Ph.J. 1942. Revision of the Penard oölogical collection from Surinam. Zoologische Mededelingen 24.
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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