Black Bulbul
Hypsipetes leucocephalus
The black bulbul is 24–25 cm (9.4–9.8 in) in length, with a long tail. The body plumage ranges from slate grey to shimmering black, depending on the race. The beak, legs, and feet are all orange and the head has a black fluffy crest. Sexes are similar in plumage, but young birds lack the crest, have whitish underparts with a grey breast band, and have a brown tint to the upperparts. They have a black streak behind the eye and on the ear coverts. Voice: They can be quite noisy, making various loud cheeping, mewing and grating calls. The Himalayan form has been reported to make a call resembling a goat kid, throwing back its neck when calling.
ID text from Wikipedia, CC BY-SA 4.0
Square-tailed Bulbul
Hypsipetes ganeesa
The square-tailed bulbul lacks the black streak behind the eye and on the ear-coverts that is present in the black bulbul.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Black Bulbul and Square-tailed Bulbul.