The Crimson Sunbird is the national bird of Singapore.

Crimson Sunbird is a resident breeder in tropical southern Asia from India to Indonesia and the Philippines.

Wild birds such as Crimson Sunbird, Greater Racket-tailed Drongo and kingfishers are found in the reserve, too.

The Crimson Sunbird (Aethopyga siparaja) is a species of bird in the sunbird family which feed largely on nectar, although they will also take insects, especially when feeding young.

It has been considered as a subspecies of the Crimson Sunbird (Aethopyga siparaja) but it does not have the central tail as elongated and is restricted in its distribution.

Crimson Sunbird (use "Polymerization" on Mavelus and Wing Eagle, it was a fusion of Faith Bird and Skull Wing Bird in the card game)

Vigors's Sunbird or Western Crimson Sunbird (Aethopyga vigorsii) is a species of sunbird which is endemic to the Western Ghats of India.

In most of the range, males have a long green-blue tail, but A.s. nicobarica of the Nicobar Islands and the former subspecies A. vigorsii (Western Crimson Sunbird) of the Western Ghats of India lack the long central tail feathers.

The Crimson Sunbird (Aethopyga siparaja) is a species of bird in the sunbird family which feed largely on nectar, although they will also take insects, especially when feeding young.

It has been considered as a subspecies of the Crimson Sunbird (Aethopyga siparaja) but it does not have the central tail as elongated and is restricted in its distribution.