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Eggs

Illustration of a Spix's Spinetail (Synallaxis spixi) egg, 18.9 × 15.34 mm
Illustration © 2026 Lincoln Savi, Savi Made. Free to use with credit.

Synallaxis spixi

  • 18.9 × 15.34 mm
  • Clutch: 4–5 eggs
Breeds in Argentina, Brazil, Paraguay, Uruguay

Pale green or greenish white, unmarked.

Sources of information

Size
Average of 2 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 8).
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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