Gray-hooded Gull

Here the details of the Gray-hooded Gull named bird below:

SCI Name:  Chroicocephalus cirrocephalus
Protonym:  Larus cirrocephalus Nouv.Dict.Hist.Nat. 21 p.502
Taxonomy:  Charadriiformes / Laridae / Chroicocephalus
Taxonomy Code:  grhgul
Type Locality:  Brazil.
Author:  Vieillot
Publish Year:  1818
IUCN Status:  Least Concern

DEFINITIONS

Chroicocephalus
(Laridae; syn. Larus † Black-headed Gull L. ridibundus) Gr. χρωικος khrōikos  coloured  < χρωζω khrōzō  to colour, to stain; -κεφαλος  -kephalos  -headed  < κεφαλη kephalē  head; "SUB GENUS 3.  CHROICOCEPHALUS.  Nobis.   Sp. 1. C. CAPISTRATUS.  Temminck.  Syn. Larus Capistratus, Temm. Jenyns.  Mouette a Mosque [sic] Brun, Temm.  Brown-headed Gull, Eyton.   Sp. 2. C. RIDIBUNDUS. Linnæus.  Syn. Larus Ridibundus, Lath. Shaw, Linn. Gmel.  L. Cinerarius Linn. Gmel.  Gavia Ridibunda Phænicopos, Briss.  L. Cinereus, Ray. Will.  La Mouette Rieuse ou à Capuchon Brun, Temm.  Le Mouette Rieuse, and Le Petite Mouette Cendrée, Buff.  Black-headed Gull, and Red-legged Gull, Penn. Lath. Bewick.   Sp. 3. C. MINUTUS. Pallas.  Syn. Larus Minutus, Pall. Gmel. Shaw, Temm.  L. Atricilloides, Gmel.   Mouette Pygmiée [sic], Temm.  Little Gull, English Authors." (Eyton 1836); "Chroicocephalus for a new subgenus under Larus, Linn., for the reception of such gulls as have the tarsi slender, thighs considerably denuded, hind toe very small, head only, or head and upper part of neck, dark-coloured in the summer state of plumage   ...   derived from two Greek words, κροικος, coloured, and κεφαλη, head; signifying that the birds classed under that name have coloured heads" (Eyton per Wharton 1878); "Chroicocephalus Eyton, Hist. Rar. Brit. Bds., Cat., p. 53, 1836—type, by subs. desig. (Gray, List Gen. Bds., p. 79, 1840), Larus capistratus Temminck = Larus ridibundus Linnaeus." (Hellmayr and Conover, 1948, Cat. Birds Americas, Pt. I (3), p. 253).
Var. Chroecocephalus, Chroeocephalus, Chroiococephalus, Chroiocephalus, Chraeococephalus, Chraecocephalus, Chroocephalus, Croicocephalus, Kroikocephalus, Kroicocephalus, Krokocephalus.

cirrocephalus
Mod. L. cirrus or cirrhus  cloud  < L. cirrus, cirri  ringlet (cf. Gr. κιρρος kirrhos  orange-tawny); Gr. -κεφαλος -kephalos  -headed  < κεφαλη kephalē  head.
● ex “Gabiota cenicienta” of de Azara 1802-1805, no. 410 (Larus).

SUBSPECIES

Gray-hooded Gull (cirrocephalus)
SCI Name: Chroicocephalus cirrocephalus cirrocephalus
cirrocephalus
Mod. L. cirrus or cirrhus  cloud  < L. cirrus, cirri  ringlet (cf. Gr. κιρρος kirrhos  orange-tawny); Gr. -κεφαλος -kephalos  -headed  < κεφαλη kephalē  head.
● ex “Gabiota cenicienta” of de Azara 1802-1805, no. 410 (Larus).

Gray-hooded Gull (poiocephalus)
SCI Name: Chroicocephalus cirrocephalus poiocephalus
poiocephalus
Gr. πολιος polios  grey; -κεφαλος -kephalos  -headed  < κεφαλη kephalē  head.