a sooty-headed bulbul (pycnonotus aurigaster) bird perches on a branch

adaptive animal asia aves avian beak bird birds birdwatching black branch bulbul environment exotic fauna feather feathers feeding forest goldenvented green habitat indonesia invasive species jungle kutilang leaves natural nature ornithology outdoor park perched perching pycnonotus aurigaster songbird sootyheaded tree tropical wild wildlife wing zoology