Helmetcrest

 Oxypogon  is a genus of hummingbird. Its members are found in tropical South America. They are:
 * Rainbow-bearded Thornbill, Oxypogon herrani
 * Rufous-capped Thornbill, Oxypogon ruficeps
 * Olivaceous Thornbill, Oxypogon olivaceus
 * Bearded Mountaineer, Oxypogon nobilis
 * Blue-mantled Thornbill, Oxypogon stanleyi
 * Green-bearded Helmetcrest / Bearded Helmetcrest, Oxypogon guerinii
 * Blue-bearded Helmetcrest, Oxypogon cyanolaemus
 * White-bearded Helmetcrest, Oxypogon lindenii
 * Buffy Helmetcrest, Oxypogon stuebelii
 * Bronze-tailed Thornbill, Oxypogon heteropogon