Red-billed Helmetshrike

Here the details of the Red-billed Helmetshrike named bird below:

SCI Name:  Prionops caniceps
Protonym:  Sigmodus caniceps Consp.Gen.Av. 1 p.365
Taxonomy:  Passeriformes / Vangidae / Prionops
Taxonomy Code:  chbhel1
Type Locality:  West Africa = Boutry [Butre] River, Gold Coast (see Hartlaub, 1857, Syst. Orn. Westafr., [Bremen], p. 105].
Author:  Bonaparte
Publish Year:  1850
IUCN Status:  Least Concern

DEFINITIONS

PRIONOPS
(Vangidae; Ϯ White-crested Helmet-shrike P. plumatus) Gr. πριων priōn, πριονος prionos  saw; ωψ ōps, ωπος ōpos  eye; “BAGADAIS, Prionops.  Bec emplumé à la base, tendu, très-comprimé latéralement; mandibule supérieure échancrée et crochue vers le bout; l'inférieure retroussée et aiguë à la pointe. — Paupières dentelées.   Esp. Le Geoffroy, Le Vaill.   ...   Prionops [πριων, serra, ωψ, oculus].” (Vieillot 1816); "Prionops Vieillot, 1816, Analyse, p. 41. Type, by monotypy, "Le Geoffroy" of Levaillant = Lanius plumatus Shaw." (Rand in Peters 1960, IX, 310).  This genus was formerly and widely separated in the family Prionopidae, and some modern workers still favour that treatment.
Var. Trinops, Trionops (Laurent Raty in litt.).
Synon. Eressornis, Knestrometopon, Phaidrometopon, Sigmodus.

caniceps
L. canus  grey; -ceps  -headed  < caput, capitis  head.

SUBSPECIES

Red-billed Helmetshrike (Red-billed)
SCI Name: Prionops caniceps caniceps
caniceps
L. canus  grey; -ceps  -headed  < caput, capitis  head.

Red-billed Helmetshrike (Gray-cheeked)
SCI Name: Prionops caniceps harterti
harterti / hartertiana / hartertianus
Ernst Johann Otto Hartert (1859-1933) German ornithologist, collector, Curator of Rothschild Mus., Tring (syn. Acestrura berlepschi, subsp. Acrocephalus australis, subsp. Alauda arvensis, syn. Aplonis opaca kurodai, subsp. Arses telescopthalmus, syn. Artamus leucoryn leucopygialis, Asthenes, Batrachostomus, syn. Brachypteryx leucophrys carolinae, subsp. Burhinus oedicnemus, subsp. Buteo buteo, Camaroptera, subsp. Campylorhynchus albobrunneus, syn. Certhia brachydactyla, subsp. Chalcites lucidus, syn. Chlorocichla simplex, subsp. Cincloramphus macrurus, subsp. Circus aeruginosus, syn. Cisticola juncidis, syn. Columba delegorguei sharpei, subsp. Crypturellus soui, syn. Cyanistes caeruleus ogliastrae, syn. Cyornis unicolor cyanopolia, subsp. Dendrocopos major, subsp. Dicrurus macrocercus, syn. Dryobates minor colchicus, syn. Dyaphorophyia concreta graueri, subsp. Emberiza schoeniclus, syn. Entomyzon cyanotis, syn. Eophona migratoria sowerbyi, subsp. Eudynamys scolopaceus, subsp. Eumyias panayensis, syn. Eurostopodus argus, Eurylaimus, syn. Falco peregrinus calidus, Ficedula, subsp. Fringilla coelebs, syn. Galerida theklae ruficolor, syn. Geospiza fuliginosa, subsp. Heleia superciliaris, subsp. Hemiprocne longipennis, syn. Hieraaetus pennatus, syn. Hypsipetes amaurotis stejnegeri, syn. Icterus icterus, subsp. Illadopsis turdina, syn. Jynx torquilla sarudnyi, syn. Lagonosticta nitidula, subsp. Linaria cannabina, syn. Lullula arborea pallida, subsp. Machaerirhynchus nigripectus, subsp. Malacocincla sepiaria, subsp. Melanorectes nigrescens, syn. Metallura tyrianthina oreopola, subsp. Micropsitta pusio, subsp. Mirafra africana, syn. Monarcha cinerascens, subsp. Mulleripicus pulverulentus, syn. Myiozetetes cayanensis hellmayri, subsp. Myrmecocichla arnotti, subsp. Myzomela obscura, syn. Ochrospiza dorsostriata maculicollis, syn. Onychognathus fulgidus hartlaubii, syn. Phylloscopus orientalis, syn. Phylloscopus reguloides assamensis, Phlogophilus, syn. Picoides kizuki matsudairai, subsp. Picumnus olivaceus, subsp. Pittasoma rufopileatum, subsp. Pnoepyga pusilla, syn. Poephila personata, subsp. Prionops caniceps, subsp. Psittacella brehmii, syn. Pternistis afer cranchii, syn. Pycnonotus barbatus tricolor, syn. Rhipidura albiscapa alisteri, syn. Rhipidura rufifrons granti, subsp. Rhodinocichla rosea, syn. Rhyticeros plicatus, syn. Scotocerca inquieta, subsp. Sericornis frontalis, syn. Sitta europaea roseilia, syn. Strix aluco nivicola, syn. Sturnus vulgaris porphyronotus, Tarphonomus, subsp. Terpsiphone viridis, Thapsinillas, syn. Treron curvirostra, syn. Vanellus miles, syn. Yuhina flavicollis rouxi, subsp. Zosterops citrinella, syn. Zosterops japonicus simplex).