Ring-necked Duck

Here the details of the Ring-necked Duck named bird below:

SCI Name:  Aythya collaris
Protonym:  Anas collaris Brit.Birds 6 pl.147,text
Taxonomy:  Anseriformes / Anatidae / Aythya
Taxonomy Code:  rinduc
Type Locality:  Lincolnshire, England, from specimen found in Leadenhall Market, London.
Author:  Donovan
Publish Year:  1809
IUCN Status:  Least Concern

DEFINITIONS

AYTHYA
(Anatidae; Ϯ Greater Scaup A. marila) Gr. αιθυια aithuia  unidentified seabird mentioned by Aristotle, Hesychius, and other authors. In modern times associated with a variety of seabirds, including a shearwater, a cormorant, a duck, and an auk (cf. Gr. myth. Thyr or Thyrie, mother of Cygnus, who was changed into a waterbird); "130. Aythya marila. — Anas marila Lin." (Boie 1822); "Aythya Boie, 1822, (before May), Tagebuch Reise Norwegen, p. 351. Type, by monotypy, Anas marila Linnaeus." (Johnsgard in Peters, 1979, I, ed. 2, p. 482).   
Var. Aethyia, Aethyja, Aithyia, Aithya.   
Synon. Aristonetta, Dyseonetta, Fuligula, Fulix, Glaucium, Hydrobates, Ilyonetta, Marila, Nettarion, Nyroca, Penelope, Perissonetta, Zeafulix.

collaris
L. collaris  of the neck  < collum  neck (cf. L. collare, collaris  neck-chain, collar).
● ex “Héoro-taire à collier blanc” of Audebert & Vieillot 1802 (syn. Acanthorhynchus tenuirostris).
● ex "Grue à collier" of d'Aubenton 1765-1781, pl. 865 (syn. Antigone antigone).
● ex “Barbu à collier de Cayenne” of d’Aubenton 1765-1781, pl. 395, and “Tamatia à collier” of de Buffon 1770-1783 (syn. Bucco capensis).
● ex "Mbatuitui collar negro" of de Azara 1802-1805, no. 392 (Charadrius).
● ex “Coucou à Collier Blanc” of Levaillant 1806, pl. 213 (syn. Clamator glandarius).
● ex "Sucrier Gamtocin" or "Sucrier à Cordon Bleue" of Levaillant 1812, pl. 299 (Hedydipna).
● ex “Gobe-mouche à collier du Sénégal” (= ♀) of Brisson 1760 (syn. Platysteira cyanea).
● ex “Pico grueso gargantilla” of de Azara 1802-1805, no. 125 (syn. Sporophila caerulescens).
● ex “Gros-Bec d’Angola” of de Buffon 1770-1785 (Sporophila).
● ex “Bacbakiri” of Levaillant 1800, pl. 67 (syn. Telophorus zeylonus).
● ex “Martin-pêcheur à collier blanc des Philippines” of Sonnerat 1776 (subsp. Todiramphus chloris).
● ex “Couroucou Rosalba” of Levaillant 1806 (Trogon).

Colaris
Gr. κολαρις kolaris (variant of καλαρις  kalaris) bird mentioned by Aristotle, not otherwise identified.
• (Coraciidae; syn. Eurystomus † Broad-billed Roller E. glaucurus) "*XXVII  Eurystomus VIEILLOT.  ...  *121. E. orientalis    ...    XXIX  Colaris CUVIER.   ...   124. C. madagascariensis (Coracias —GM.) RCHB.   ...   *125. C. afra CUVIER.   ...   *126. C. gularis (Euryst. — VIEILL.) WAGL.   ...   127. C. viridis WAGLER." (Reichenbach 1852); "Colaris "Cuvier" Reichenbach, 1852, Handbuch der Speciellen Ornithologie, Icones ad Synopsin Avium. cont. IX. Meropinae, p. 56 (not of Cuvier, 1816).  Type, by virtual monotypy, Coracias madagascariensis Gmelin, 1788 = Coracias glaucurus Statius Müller, 1776." (JAJ 2021).
• (Coraciidae; syn. Eurystomus † Oriental Dollarbird E. orientalis) "LES ROLLES. (COLARIS. Cuv.)  Diffèrent des rolliers par leur bec plus court, plus arqué, et surtout élargi à la base au point d'y être moins haut que large (3).   ...   (3) Coracias orientalis enl. 619. - Cor. Madagascariensis. enl. 501. - Cor. Afra Lath., Vaill., loc. cit. pl. 35.  Colaris est le nom grec d'un oiseau inconnu." (Cuvier 1816); "Colaris Cuvier, 1816, Règne Animal, I, p. 401.  Type, by subsequent designation (G. Gray, 1855, Cat. Genera Subgenera Birds Brit. Mus., p. 13), Coracias orientalis Linnaeus, 1766." (JAJ 2021).
Var. Collaris.