Apus Apus is a scientific name for the common swift bird, which is a small migratory bird known for its incredible speed and agility in the air. Some synonyms for Apus Apus include the swiftlet, black swift, and spine-tailed swift. These synonyms are often used interchangeably to describe this amazing bird. The swiftlet has a distinctive crescent shape that makes it easy to spot in the sky, while the black swift is known for its dark feathers and sleek appearance. The spine-tailed swift is named for its long, pointed tail feathers that give it extra lift and maneuverability. Whether you call it Apus Apus, swiftlet, black swift, or spine-tailed swift, this incredible bird will continue to amaze and inspire birdwatchers and nature lovers around the world.