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Line 15: Its natural [[habitat]] is subtropical or tropical moist lowland [[forest]]s. At under {{convert\|9\|cm\|in\|abbr=on}}, 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.

Pygmy swiftlet: Difference between revisions