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Illustration of a Sulphur-rumped Myiobius (Myiobius sulphureipygius) egg, 18.3 × 13 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Myiobius sulphureipygius

  • 18.3 × 13 mm
  • Clutch: 2 eggs
Breeds in Mexico, Belize, Costa Rica, Guatemala, Honduras, Nicaragua, Panama

White or greyish white, finely speckled all over with chocolate, heaviest in a wreath around the middle or larger end.

Sources of information

Size
Average of 8 eggs: Skutch, A. F. 1960. Life histories of Central American birds II. Pacific Coast Avifauna 34., p. 544 (PDF p. 546).
Agrees with: Wetmore, A. 1972. The birds of the Republic of Panamá, part 3. Smithsonian Miscellaneous Collections 150(3)., p. 490 (PDF p. 500).
Description
Skutch 1960, Life Histories of Central American Birds II (Pacific Coast Avifauna 34).
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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