Vibrating its tail while perched on a small branch as it looks around anxiously when the branch moved suddenly, Black-crested Bulbul Rubigula flaviventris, Thailand

blackcrested bulbul bulbuls passerine birds pycnonotidae passeriformes rubigula flaviventris bird in the habitat blackcapped perch songbird foraging habitat preening vanga birds plumage bird watching branch subspecies khao yai yellow conspecific southeast asia tree national park insectivore insectivorous white eyes branches thailand nature rubigula goldcolored tropical forest bill crest insects jungle rainforest afternoon unesco feathers wings phylogenetic tropical forest world heritage indian subcontinent red