Bornean Bulbul (Rubigula montis) [XC774287]
by id from Gunung Trus Madi, Sabah, Malaysia (call)
Bornean Bulbul (Rubigula montis) [XC207998]
by Frank Lambert from Bakalalan-Bario Rd, Sarawak, Indonesia (call)
Subspecies
No subspecies.
Genus as currently constituted probably polyphyletic. In-depth analysis of morphology, voice, behaviour and genetics required to redefine its limits. Forms a superspecies with Black-crested Bulbul (Pycnonotus flaviventris), Ruby-throated Bulbul (Pycnonotus dispar), Flame-throated Bulbul (Pycnonotus gularis) and Black-capped Bulbul (Pycnonotus melanicterus), and all five usually treated as conspecific. All may merit placement in a separate genus, Rubigula.
Considered by some authors to be a subspecies of Black-crested Bulbul (Pycnonotus flaviventris).