Grey-headed Bulbul.
The grey-headed bulbul (Brachypodius priocephalus) is a member of the bulbul family, Pycnonotidae. It is endemic to the Western Ghats in south-western India, and found from Goa south to Tamil Nadu at altitudes up to 1200m. It is found in dense reeds or thickets mainly near rivers and swampy areas inside forests. They have a distinctive call that reveals their presence inside dense vegetation where they are hard to spot.
Its plumage is olive-green, with a medium-grey on the crown head, nape and throat. The forehead is yellow-green. The back and wings are olive-green becoming lighter towards the vent. The rump has yellowing green feathers edged in black giving a barred appearance. The flanks are dark and grey edged. The undertail coverts are grey. The beak is greenish and grey while the legs are pinkish yellow. The iris is distinctly bluish white. The tail is grey on the central feathers (the shaft being black), the outer ones are black and are broadly tipped with grey. Both sexes are similar but juveniles have the head dark olive with the yellow on the forehead duller.
Olive-yellow bulbul with a black head and unsettling sapphire eyes. Broad black band across the tail is especially noticeable when seen from below. No other bulbul in its range sports a crestless dark head, but look out for the slenderer and longer-billed leafbirds, whose dark throats may cause confusion when seen from below.
Extremely rare gray morph replaces all yellow with gray, and intermediate birds have both yellow and gray patches. Inhabits broadleaf and mixed forests as well as edges, often in areas close to water. Usually seen in pairs or small flocks in the upper layers of lowland and foothill forest.
Unlike many other bulbuls, not particularly vocal; gives occasional “chew” or “chep” notes, often while flying.