Parent: Pycnonotus (Bulbuls)

└─ Pycnonotus plumosus (Olive-winged bulbul)

└─── Pycnonotus plumosus hutzi

└─── Pycnonotus plumosus insularis

└─── Pycnonotus plumosus plumosus

└─── Pycnonotus plumosus porphyreus