Cave Swiftlets in Borneo
Lesson Express
Q: How do cave swiftlets navigate in the dark caves?
A: Cave swiftlets use echolocation, producing clicks to find their way in the dark.
Q: What material do cave swiftlets use to build their nests?
A: They use their own saliva to create nests.
Q: How do cave swiftlets respond when their nests are harvested?
A: They immediately begin building a new nest.
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