the black bulbul (hypsipetes leucocephalus), also known as the himalayan black bulbul or asian black bulbul

nature animal wild bird bulbul wildlife black background beautiful photography birdwatching species avian squaretailed canopydwelling birds white head conservation efforts status ecological balance importance flora fauna forest ecology natural diversity tropical ecosystem small invertebrates richness sri lanka squareshaped tail plumage ecotourism sinharaja habitat behavior endangered canopy berries environmental ornithology foraging fruits evergreen reserve insects biodiversity birdsong rainforest protected area hypsipetes leucocephalus also known himalayan asian