Red-knobbed Imperial-Pigeon

Here the details of the Red-knobbed Imperial-Pigeon named bird below:

SCI Name:  Ducula rubricera
Protonym:  Globicera rubricera Compt.Rend. 39 p.1073
Taxonomy:  Columbiformes / Columbidae / Ducula
Taxonomy Code:  rkipig1
Type Locality:  New Ireland.
Author:  Bonaparte
Publish Year:  1854
IUCN Status:  Near Threatened

DEFINITIONS

DUCULA
(Columbidae; Ϯ Mountain Imperial Pigeon D. badia insignis) Nepalese name Dukul for the imperial pigeons (cf. Hindi names Dunkul and Doomkul); "Genus or Sub-genus — DUCULA nobis. — DUKUL OF THE NIPALESE (genericé)    Character of the genus:—bill equal to the head, straight, cylindric, very feeble; both mandibles membranous for three-fourths from the gape; tip of the upper mandible gently inclined—of the lower, strongly compressed; nares broad, linear, obliquely transverse, central; their groove faint; their tect subtumid.  Wings short, not rounded, 3, 4, 5 quills sub-equal and longest; central primaries with their tips wavily truncated.  Tail 14, long, strong and square; tarsi very low, and plumed nearly to the toes laterally, less in front; toes depressed with broad flat soles; lateral fores sub-equal, hind large; nails strong, arched and acuminated; central and hind equal, lateral fores equal, less; orbits nude; plumage simple.  The above is a tedious charcater, but it is a distinct one. Those who love more summary proceedings may perhaps approve the following: "Bill and wings as in Goura; legs and feet as in Vinago."  ...  Lastly, though Ducula, like Vinago, be exclusively arboreal and fruit-eating; the latter is eminently gregarious—the former, almost a solitary.   Species new. DUCULA INSIGNIS. Great Ducula, nobis." (Hodgson 1836); "Ducula Hodgson, As. Res., 19, 1836, p. 160. Type, by monotypy, Ducula insignis Hodgson." (Peters, 1937, III, p. 42).   
Synon. Carpophaga, Carpophagella, Compsoenas, Globicera, Lamprura, Muscadivora, Muscadivores, Myriphaga, Myristicivora, Phaenorhina, Pterocolpa, Ptilocolpa, Rinopus, Serresius, Zonoenas, Zonophaps.

rubricera
L. ruber  red; Med. L. cera  cere  (cf. Gr. κερας keras, κερως kerōs  horn).

SUBSPECIES

Red-knobbed Imperial-Pigeon (Pink-necked)
SCI Name: Ducula rubricera rubricera
rubricera
L. ruber  red; Med. L. cera  cere  (cf. Gr. κερας keras, κερως kerōs  horn).

Red-knobbed Imperial-Pigeon (Gray-necked)
SCI Name: Ducula rubricera rufigula
rufigula
L. rufus red; gula throat.
● ex “Péristère à gorge rousse” of Hombron & Jacquinot 1845 (Gallicolumba).
● ex “Petit Merle brun à gorge rousse de Cayenne” of d’Aubenton 1765-1781, pl. 644, fig. 2 (Gymnopithys).