The Etruscans produced numerous askoi in the shape of ducks, but askoi in the shape of other birds are quite rare. Only one other rooster-shaped example is known, almost identical to this one. The askos in the form of a jackdaw (Corvus monedula), a Eurasian bird similar to a small crow, is the only one known. It is adorned with a protective bulla (amulet) necklace of the type usually worn by Etruscan children and must represent someone's favorite pet.
Richter, Gisela M. A. 1930. "Recent Accessions in the Classical Department." Bulletin of the Metropolitan Museum of Art, 25(5), part 1: pp. 136, 138, fig. 5.
Richter, Gisela M. A. 1940. Handbook of the Etruscan Collection. p. 46, fig. 136, New York: Marchbanks Press.
de Puma, Richard Daniel. 2013. Etruscan Art in the Metropolitan Museum of Art. no. 6.63, pp. 220–21, New Haven and London: The Metropolitan Museum of Art.
Sguaitamatti, Michel and Danielle Leibundgut Wieland. 2015. "Vases Plastiques en forme d'Animaux." Le Sanglier et le Satyre: Vases Plastiques Hellénistiques de Grande Grèce et de Sicile, 1. A 295, pp. 162, 104, pl. 47, Zürich: Akanthus.