Pigeons, mynas, crows, starlings, house sparrows, and other birds are quite clever in adapting to city life. They aren't scared of people, and many common methods to shoo them away don't really do the trick.
These birds have changed their habits and don't migrate anymore, making them a constant bother with their cooing, squawking, and messy habits. They invade production areas, warehouses, dine on farm animal food, or even visit restaurants and animal exhibits in zoos. Their presence brings health and hygiene issues due to their droppings.