1. a small swift-flying bird of tropical Asia that builds edible nests used to make bird’s nest soup

Examples

• The swiftlet colony nested in the limestone caves along the coast.
• Bird’s nest soup is made from the dried saliva nests of swiftlets.
• Swiftlets use echolocation to navigate in dark caves.
• The harvesting of swiftlet nests is a traditional industry in Southeast Asia.
• These tiny swiftlets can fly at remarkable speeds while catching insects.
• Conservation efforts aim to protect swiftlet breeding sites from over-harvesting.