Figure 2
From: Expanding the eggshell colour gamut: uroerythrin and bilirubin from tinamou (Tinamidae) eggshells
Photographs of eggshells of (a) Nothura maculosa, (b) Eudromia elegans, (c) Turdus migratorius, and (d) Dromaius novaehollandiae. Image credits: Richard O. Prum.
