Johnny Wee recently documented an oriental whip snake (Ahaetulla prasina) catching and swallowing an Olive-backed Sunbird (Cinnyris jugularis). The catch was fast and sudden. Once firmly clasped between the jaws of the snake, there was no escape for the bird. Not even a struggle.
Next was the slow process of swallowing the bird. The snake took nearly an hour to completely swallow the sunbird.
The oriental whip snake is common around vegetation in rural and urban areas alike. It can grow up to 1.9 m long. Its slender green body has a pointed snout in side profile. It preys mainly on lizards but also eats frogs and small birds. The snake is mildly poisonous.
Note: According to R Subaraj, the bird is an immature Brown-throated Sunbird – see comment below.