Parent: Pycnonotus (Bulbuls)

└─ Pycnonotus urostictus (Yellow-wattled bulbul)

└─── Pycnonotus urostictus atricaudatus

└─── Pycnonotus urostictus basilanicus

└─── Pycnonotus urostictus ilokensis

└─── Pycnonotus urostictus philippensis

└─── Pycnonotus urostictus urostictus