Le genre Pycnonotus regroupe 34 espèces de passereaux appartenant à la famille des Pycnonotidae. On les appelle en français bulbuls.

1/ Bulbul à ventre rouge
Red-vented bulbul (Pycnonotus cafer, Bông lau đít đỏ)

2/ Bulbul de Finlayson
Stripe-throated Bubul, or streak-throated bulbul (Bông lau họng vạch, Pycnonotus finlaysoni)

3/ Bulbul goiavier
Yellow-vented bulbul, or eastern yellow-vented bulbul (Bông lau mày trắng, Pycnonotus goiavier)

4/ Bulbul à poitrine brune
Brown-breasted bulbul, also Anderson's Bulbul (Bông lau ngực nâu, Pycnonotus xanthorrhous) 

5/ Bulbul cul-d'or
Sooty-headed bulbul (Bông lau tai trắng, Pycnonotus aurigaster) 

6/ Bulbul de Blanford
Irrawaddy or Streak-eared Bulbul, or Blanford's Olive Bubul (Bông lau tai vằn, Pycnonotus blanfordi)

7/ Bulbul de Chine
Light-vented bulbul, also called the Chinese bulbul (Bông lau Trung Quốc, Pycnonotus sinensis)

8/ Bulbul flavescent
Flavescent bulbul (Bông lau vàng, Pycnonotus flavescens) 

9/ Bulbul orphée
Red-whiskered bulbul, or crested bulbul (Chào mào, Pycnonotus jocosus)

Pycnonotidae vient du grec: puknos "épais, dense" ou "compact, concis" et -nōtos "à dos".