Gray-headed Goshawk

Here the details of the Gray-headed Goshawk named bird below:

SCI Name:  Accipiter poliocephalus
Protonym:  Accipiter poliocephalus Proc.Zool.Soc.London Pt26 no.357 p.170
Taxonomy:  Accipitriformes / Accipitridae / Accipiter
Taxonomy Code:  gyhgos1
Type Locality:  Aru Islands.
Author:  Gray, GR
Publish Year:  1858
IUCN Status:  Least Concern

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.

POLIOCEPHALUS
(Podicipedidae; Ϯ Hoary-headed Grebe P. poliocephalus) Specific name Podiceps poliocephalus Jardine & Selby, 1827. "FAM. COLYMBIDÆ.   Genus Podiceps. LATH.  ...  Pod. (Poliocephalus, SELBY) (1) Nestor.  Australia.  ...  (1) Mr. Swainson gives to this group a generic value, but we doubt whether it is even entitled to a subgeneric rank." (Selby 1840); "Poliocephalus Selby, Cat. Gen. Subgen. Types Av., 1840, p. 47. Type, by monotypy and tautonymy, Podiceps poliocephalus Jardine and Selby." (Peters 1931, 1, 35) (see nestor).
Var. Poliocephelus.
Synon. Colymbetes, Dasyptilus.

poliocephalus
Gr. πολιος polios  grey, grizzled; -κεφαλος -kephalos  -headed  < κεφαλη kephalē  head.
● ex “Grey-headed Cuckow” of Latham 1787 (Cuculus).
● ex “Ash-headed Thrush” of Latham 1801 (Turdus).