Red-vented Bulbul (Pycnonotus cafer), Assam, India

The red-vented bulbul (Pycnonotus cafer) is a resident breeder across the Indian subcontinent, including Sri Lanka extending east to Burma and parts of Tibet.
It has been introduced in many other parts of the world where it is considered an invasive pest partly due to their habit of damaging fruit crops and dispersing the seeds of invasive plants.