(Turdidae; Ϯ Eastern Bluebird S. sialis) Specific name Sylvia Sialis Wilson, 1808; "SIALIA. Sw. in Zool. Journ. No. 10.  37. Sialia azurea?  Sylvia Sialis? Wilson i. pl. 3. f. 3.  Common on the Table land at Real del Monte and other places. I have some doubts whether this is not a distinct species: my specimen is of a young bird." (Swainson 1827, Philos. Mag., new ser., I (May)); "SIALIA.   ...   Bill short, the base depressed, the sides compressed, culmen slightly elevated: nostrils partly hid by setaceous feathers: mouth wide, and slightly bearded" (Swainson 1827, Zool. Journ., III (September)); "Sialia Swainson, 1827, Phil. Mag., n.s., 1 (5), p. 369. Type, by monotypy [and virtual tautonymy], Sialia azurea Swainson = Motacilla sialis Linnaeus." (Ripley in Peters 1964, X, 83). Although famed in song and literature, the Eastern Bluebird is a declining bird of eastern North America.
Var. Sialis.
Synon. Erythaca, Scyrornis.

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 18 December 2018).