Aglaiocercus

• Violet-tailed Sylph Aglaiocercus coelestis

  This hummingbird lives on the western Andean slope of Colombia and Ecuador. Males have long violet-blue tails; females are smaller and lack the long tail.

• Long-tailed Sylph Aglaiocercus kingii

  This hummingbird lives in Andean mountain forest. Males flash a very long blue-green tail and look markedly different from females.

• Venezuelan Sylph Aglaiocercus berlepschi

  The male has a blue throat and long tail, while the female has a white throat and shorter tail. It is confined to northeastern Venezuela's mountains and searches for nectar by day in humid forest and scrub.

• Violet-tailed Sylph Aglaiocercus coelestis

  This hummingbird lives on the western Andean slope of Colombia and Ecuador. Males have long violet-blue tails; females are smaller and lack the long tail.

• Long-tailed Sylph Aglaiocercus kingii

  This hummingbird lives in Andean mountain forest. Males flash a very long blue-green tail and look markedly different from females.