Gran Canaria Blue Chaffinch

Here the details of the Gran Canaria Blue Chaffinch named bird below:

SCI Name:  Fringilla polatzeki
Protonym:  Fringilla teydea polatzeki Orn.Monatsb. 13 p. 164
Taxonomy:  Passeriformes / Fringillidae / Fringilla
Taxonomy Code:  blucha3
Type Locality:  Gran Canaria.
Author:  Hartert, E
Publish Year:  1905
IUCN Status:  Endangered

DEFINITIONS

FRINGILLA
(Fringillidae; Ϯ Common Chaffinch F. coelebs) L. fringilla (also frigilia, fringuilla, fringillus, fringuillus, frenguillus, fringuellus, fringuillo)  finch, subsequently associated with the Chaffinch; "98. FRINGILLA.  Rostrum conicum, rectum, acutum." (Linnaeus 1758); "Fringilla Linnaeus, 1758, Syst. Nat., ed. 10, 1, p. 179. Type, by tautonymy, "Fringilla" = Fringilla coelebs Linnaeus." (Mayr in Peters, 1968, XIV, p. 203). Linnaeus's Fringilla comprised thirty-one  species (F. oryzivora, F. cœlebs, F. Montifringilla, F. lulensis, F. lapponica, F. sylvatica, F. melancholica, F. erythrophthalma, F. Carduelis, F. Melba, F. Amandava, F. Gyrola, F. rubra, F. tristis, F. Zena, F. brasiliana, F. butyracea, F. Canaria, F. Spinus, F. flammea, F. flavirostris, F. cannabina, F. Linaria, F. angolensis, F. violacea, F. Schœniclus, F. domestica, F. montana, F. chinensis, F. hyemalis, F. Zena). Modern research suggests that some of the southern and insular subspecies of the Common Chaffinch may be entitled to specific rank, e.g. canariensis, spodiogenys, moreletti.
Var. Frangilla, Fringuilla, Fringille, Frlngilla. 
Synon. Coelebs, Hortulanus, Spermologa, Spiza, Struthus.

polatzeki
Capt. Johann Polatzek (1839-1927) Austrian ornithologist, collector in the Canary Is. 1902-1905, and Balearic Is. 1910 (subsp. Alaudala rufescens, Fringilla, syn. Galerida theklae).