Cypsiurus balasiensis, Asian Palm-Swift, family Apodidae, from tropical Asia, India to the Philippines. The down and feather nest is glued to the underside of a palm leaf with saliva, which is also used to secure the usually two or three eggs. This is a bird of open country and cultivation, which is strongly associated with oil palms. They spend most of their lives in the air, often making trilling “tiririree” calls while foraging on insects in pairs or loose flocks. They drink on the wing.
