Troides darsius is the National Butterfly of Sri Lanka.

The Sri Lanka Birdwing is a beautiful butterfly with yellow and black wings. It is also the largest butterfly that lives in our country. Different varieties of Birdwing butterflies can be seen in other parts of the world, but the Sri Lanka Birdwing scientifically known as Troides darsius is a unique species that can be found only in our country.

Birdwing is the largest butterfly in Sri Lanka and is distributed all over the island. It is endemic to Sri Lanka so can be found only in our country and it is also not a pest that harms crops nor does it spread diseases. Though the Birdwing butterfly was common in our gardens earlier, they have disappeared from some areas because we have cut most of the trees and bushes that the butterflies feed on and lay eggs on.

The Birdwing mother always lays eggs on sap sanda vines, so by planting these you can try to attract Birdwings to your garden again. They also like to feed on nectar in flowers such as Ixora and Pinna.