Dwarf Jay

Here the details of the Dwarf Jay named bird below:

SCI Name:  Cyanolyca nanus
Protonym:  Cyanocorax nanus Bull.Acad.R.Sci.Brux. 14 pt2 p.103
Taxonomy:  Passeriformes / Corvidae / Cyanolyca
Taxonomy Code:  dwajay1
Type Locality:  Le Mexique [= Mexico].
Author:  Du Bus
Publish Year:  1847
IUCN Status:  Near Threatened

DEFINITIONS

CYANOLYCA
(Corvidae; Ϯ Black-collared Jay C. armillata) Gr. κυανος kuanos  dark-blue; λυκος lukos  type of crow, perhaps the Jackdaw, mentioned by Aristotle and Hesychius.; "Gen. Cyanolyca nov. gen. *)  Dohlenheher.  Cyanocitta Bonap. nec Strickl.   1031.  1. C. armillata Nob. — Cyanocorax armillatus Gray Gen. B. No. 21. tab. 74.   Cyanurus nigritorques Lafr.?  ...       1032.  2.  C. ornata Nob. —  Pica ornata Less. Rev. Zool. 1839. p. 41. — Cyanocorax ornata Gray Gen. B. No. 19. — Corvus cyanicollis Licht. Bonap. Consp. p. 379. No. 13.    ...   *) Von κυανεος, blau und λίκος [sic], Dohle. — Die Gruppe weicht von den vorhergehenden [Dolometis] durch stärkern Schnabel, bürstenartige Stirnfedern u.s.w. ab, und nähert sich den folgenden Gruppen [Xanthocitta].  Hierher ferner: 1. Cyanolyca viridicyana. — Garrulus viridicyanus Orb. Lafr.  —  2. C. Beachii — Garrulus Beachii Vig.  —  3. C. melanocyanea. — Garrulus melanocyaneus Hartl." (Cabanis 1853); "Cyanolyca Cabanis, 1851 [= 1853], Mus. Hein., 1, p. 223. Type, by subsequent designation (Gray, 1855, Cat. Gen. Subgen. Birds, p. 62), Cyanocorax armillatus Gray." (Blake in Peters, 1962, XV, p. 216).

nanum / nanus
L. nanus dwarf < Gr. νανος nanos dwarf.
● ex “Barbu du Sénégal” of d’Aubenton 1765-1781, pl. 746, fig. 2, and “Petit Barbu” of de Buffon 1770-1786 (?syn. Gymnobucco calvus).
● ex “Ynambú-carapé” of de Azara 1802-1805, no. 328 (Taoniscus).