Pygmy swiftlet
The pygmy swiftlet is a species of swift in the family Apodidae.
It is endemic to the Philippines.
Its natural habitat is subtropical or tropical moist lowland forests. At under, it's the world's smallest swift.
These miniature species, pygmy swiftlet of the Philippines weighs only 5 grams. in addition, swiftlets that nest in complete darkness rooted in caves have the ability to position an object by reflected sound, precisely used by animals such as dolphins and bats,This phenomenon is called echolocation.
