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Ixos is a genus of passerine birds in the bulbul family, Pycnonotidae.

1/ Streaked bulbul, or green-backed bulbul (Cành cạch Mã Lai, Ixos malaccensis)
Also known as Hypsipetes malaccensis. Not certain of the genus.

2/ Mountain bulbul (Cành cạch núi, Ixos mcclellandii), also known as green-winged bulbul, McClelland's bulbul, McClelland's rufous-bellied bulbul, mountain streaked bulbul, and rufous-bellied bulbul
Often placed in Hypsipetes, but seems to be closer to the genus Ixos, the Sunda bulbul.
Found in Southeast Asia, named after British East India Company Surgeon John McClelland.

Mountain bulbul 
(Cành cạch núi, Ixos mcclellandii)
Alternate names for the mountain bulbul include the green-winged bulbul, McClelland's bulbul, McClelland's rufous-bellied bulbul, mountain streaked bulbul, and rufous-bellied bulbul.

The mountain bulbul (Ixos mcclellandii) is a songbird species in the bulbul family, Pycnonotidae.
The bird is found in Southeast Asia.

The family name is from Greek: puknos "thick" or "compact" and -nōtos "-backed".
Ixos the Ancient Greek for "mistletoe, birdlime".

Streaked bulbul
or green-backed bulbul (Cành cạch Mã Lai, Ixos malaccensis)
Also known as Hypsipetes malaccensis. Not certain of the genus.

The streaked bulbul (Ixos malaccensis), or green-backed bulbul, is a songbird species in the bulbul family (Pycnonotidae).
The bird is found on the Malay Peninsula, Sumatra, and Borneo. 

The family name is from Greek: puknos "thick" or "compact" and -nōtos "-backed".
Ixos the Ancient Greek for "mistletoe, birdlime".