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Pygmy swiftlet
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<p>The pygmy swiftlet (<i>Collocalia troglodytes</i>) is a species of <a href="/facts/Swift_(bird)/VCEvAWuo">swift</a> in the family <a href="/facts/Apodidae/VCEvAWuo">Apodidae</a>. It is <a href="/facts/Endemism/xt4IpIsl">endemic</a> to the <a href="/facts/Philippines/ARpmxXQV">Philippines</a>. </p><p>Its natural <a href="/facts/Habitat/zo1DN2gA">habitat</a> is tropical moist lowland <a href="/facts/Forest/RnMtb31v">forests</a>. At under 9 cm (3.5 in), it is the world's smallest swift. It weighs only 5 grams. </p>