Nicobar Sparrowhawk

Here the details of the Nicobar Sparrowhawk named bird below:

SCI Name:  Accipiter butleri
Protonym:  Astur butleri Bull.Br.Orn.Club 7 p.27
Taxonomy:  Accipitriformes / Accipitridae / Accipiter
Taxonomy Code:  nicspa1
Type Locality:  Car Nicobar.
Author:  Gurney Jr, JH
Publish Year:  1898
IUCN Status:  Vulnerable

DEFINITIONS

ACCIPITER
(Accipitridae; Ϯ Eurasian Sparrowhawk A. nisus) L. accipiter, accipitris  hawk  < accipere  to grasp (the original meaning was “to understand” rather than “to seize”) (cf. Med. L. accipiter  Sparrowhawk; ancipiter  Goshawk; "another possible origin is from the Greek aci for 'swift' and pertrum [?πτερον] for 'wing'." (Clark & Davies 2018)); "Accipiter. Genus 8.  ...  Les femelles des Oiseaux de ce genre sont plus grandes que leurs mâles. Elles sont aussi mieux faites, plus fortes & plus courageuses. Pour cette raison on appelle les mâles Tiercelets; parce qu'ils sont d'environ un tiers plus petits que leurs femelles.  ...  **1. L'EPERVIER.  ...  ACCIPITER." (Brisson 1760): based on "Accipiter minor" of Gessner 1555, "Accipiter fringillarius" of Gessner 1555, Schwenckfeld 1603, Jonston 1650-1653, and Charleton 1668, "Nisus" of Willughby 1676, and Sibbald 1684, and numerous other references; "Accipiter Brisson, Orn., 1, 1760, p. 28, 310. Type, by tautonymy, Accipiter Brisson = Falco nisus Linné." (Peters, 1931, I, 205). 
Synon. Aerospiza, Aesalon, Asterias, Astur, Chirospizias, Cooperastur, Daedalion, Dinospizias, Erythrospiza, Eunisus, Eusparvius, Hieraspiza, Ierax, Leptohierax, Leucospiza, Lophospiza, Neonisus, Nisastur, Nisuoides, Nisus, Paraspizias, Phabotypus, Scelospiza, Sparvius, Spilospiza, Tachyspiza, Teraspiza, Urospiza.

butleri
● Arthur Lennox Butler (1873-1939) British tea-planter in Ceylon, collector, Curator of Selangor State Mus., Malaya, Superintendent of Game Preservation in Sudan 1901-1915 (syn. Anomalospiza imberbis, subsp. Ardeotis arabs, syn. Cinnyris osea decorsei, syn. Cisticola cantans concolor, syn. Columba livia schimperi, syn. Eremopterix nigriceps albifrons, syn. Lagonosticta larvata nigricollis, subsp. Phylloscopus castaniceps, subsp. Ptilopachus petrosus, syn. Upupa epops).
● Lt.-Col. Edward Arthur Butler (1842-1916) British Army in Gibraltar, India and South Africa, collector, taxidermist, ornithologist (Accipiter, syn. Anthus chloris, Strix).

SUBSPECIES

Nicobar Sparrowhawk (butleri)
SCI Name: Accipiter butleri butleri
butleri
● Arthur Lennox Butler (1873-1939) British tea-planter in Ceylon, collector, Curator of Selangor State Mus., Malaya, Superintendent of Game Preservation in Sudan 1901-1915 (syn. Anomalospiza imberbis, subsp. Ardeotis arabs, syn. Cinnyris osea decorsei, syn. Cisticola cantans concolor, syn. Columba livia schimperi, syn. Eremopterix nigriceps albifrons, syn. Lagonosticta larvata nigricollis, subsp. Phylloscopus castaniceps, subsp. Ptilopachus petrosus, syn. Upupa epops).
● Lt.-Col. Edward Arthur Butler (1842-1916) British Army in Gibraltar, India and South Africa, collector, taxidermist, ornithologist (Accipiter, syn. Anthus chloris, Strix).

Nicobar Sparrowhawk (obsoletus)
SCI Name: Accipiter butleri obsoletus
obsoleta / obsoletum / obsoletus
L. obsoletus  plain, worn out, forgotten  < obsolescere  to wear out.
● ex “Plain Falcon” of Pennant 1785 (syn. Falco rusticolus).