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Illustration of a Red-billed Tyrannulet (Zimmerius cinereicapilla) egg, 16.3 × 12.1 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Zimmerius cinereicapilla

  • 16.3 × 12.1 mm (estimated)
  • Speculative: we haven't found a documented description of this egg yet, so we estimated its colours and markings and its size from related birds.
Breeds in Bolivia, Ecuador, Peru

No documented description found yet; drawn like the Guatemalan Tyrannulet egg (same genus).

Sources of information

Size
Estimated, no measurements found: the median length and width of measured eggs of the same genus: Zimmerius acer, Zimmerius gracilipes, Zimmerius parvus, Zimmerius vilissimus.
Description
Estimated, no description found: drawn like a related egg (Guatemalan Tyrannulet).
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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