Variable Hawk

Here the details of the Variable Hawk named bird below:

SCI Name:  Geranoaetus polyosoma
Protonym:  Falco polyosoma Voy.UraniePhys.[Freycinet]Zool. livr.3 p.92 pl.14
Taxonomy:  Accipitriformes / Accipitridae / Geranoaetus
Taxonomy Code:  rebhaw2
Type Locality:  Falkland Islands.
Author:  Quoy & Gaimard
Publish Year:  1824
IUCN Status:  Least Concern

DEFINITIONS

GERANOAETUS
(Accipitridae; Ϯ Grey Buzzard Eagle G. melanoleucus) Gr. γερανος geranos  crane (i.e. grey); αετος aetos  eagle; "5. Geschlecht.  Bussard oder Seeadler, Haliaëtus, Sav.    ...    3) Sperberseeadler, Geranoaëtus, Kp. (aguja)." (Kaup 1844); "Geranoaetus Kaup, Class. Säugeth. und Vög., 1844, p. 122. Type, by monotypy, Falco aguia Temminck = Spizaetus melanoleucus Vieillot." (Peters, 1931, I, p. 227).  
Var. Geranaetus.
Synon. Heteroaetus, Tachytriorchis.

polyosoma
Gr. πολιος polios  grey (cf. πολυς polus  many); σωμα sōma, σωματος sōmatos  body.

SUBSPECIES

Variable Hawk (Variable)
SCI Name: Geranoaetus polyosoma polyosoma
polyosoma
Gr. πολιος polios  grey (cf. πολυς polus  many); σωμα sōma, σωματος sōmatos  body.

Variable Hawk (Juan Fernandez)
SCI Name: Geranoaetus polyosoma exsul
exsul
L. exsul  exile  < ex  out of; solum  country, land (i.e. remote, isolated, insular).