Long-winged Harrier

Here the details of the Long-winged Harrier named bird below:

SCI Name:  Circus buffoni
Protonym:  Falco Buffoni Syst.Nat. 1 pt1 p.277
Taxonomy:  Accipitriformes / Accipitridae / Circus
Taxonomy Code:  lowhar1
Type Locality:  northeastern Brazil.
Author:  Gmelin, JF
Publish Year:  1788
IUCN Status:  Least Concern

DEFINITIONS

CIRCUS
(Accipitridae; Ϯ Western Marsh Harrier C. aeruginosus) Gr. κιρκος kirkos  partly mythical hawk, named for its circling flight  < κιρκος kirkos  circle, mentioned by many classical authors and later identified with the Hen Harrier (cf. κιρκη kirkē  bird referred to by Aelianus, different to κιρκος kirkos but not otherwise identified); "BUSARD. Circus.  { Le bec courbé dès la base; la tête plate en dessus, et garnie de plumes; la base du bec recouverte d'une cire; les ailes très-longues; la première penne de l'aile, très-courte; le tarse long et grêle." (de Lacépède 1799); "Circus Lacépède, Tabl. Ois., 1799, p. 4. Type, by subsequent designation, Falco aeruginosus Linné. (Lesson, Man. d'Orn., 1, 1828, p. 105.)" (Peters, 1931, I, p. 264).
Var. Cercus.
Synon. Eucircus, Glaucopteryx, Melanocircus, Polyborus, Pseudocircus, Pterocircus, Pygargus, Spilocircus, Spizacircus, Strigiceps.

circus
Gr. κιρκος kirkos  partly mythical hawk, named for its circling flight  < κιρκος kirkos  circle (syn. Circus aeruginosus).

buffoni / buffonianus / buffonii
George-Louis Leclerc Comte de Buffon (1707-1788) French naturalist, famed for his multi-volumned 'Histoire Naturelle' 1749-1788 ('Histoire naturelle des Oiseaux' 1770-1783), Director of the Jardin du Roi in Paris (syn. Cacatua sulphurea parvula, Chalybura, Circus (ex “Cayenne Ringtail” of Latham 1781), syn. Colaptes punctigula (ex “Grand pic rayé de Cayenne” of d’Aubenton 1765-1781, pl. 719), syn. Melanocorypha calandra, subsp. Picumnus exilis (ex “Petit Pic de Cayenne” of d’Aubenton 1765-1781, pl. 786, fig. 1), syn. Polioptila plumbea, syn. Stercorarius longicaudus, syn. Sturnia sinensis ("BUFFONIAN ORIOLE.  ...  DESCRIBED by the Count de Buffon" (Shaw 1809)), subsp. Tauraco persa (ex “Touraco Buffon” of Levaillant 1806)).