Green-bearded Helmetcrest (Oxypogon guerinii) [XC589019]
by Peter Boesman from Humedal Laguna de Los Tunjos, PNN Sumapaz, Colombia (call)
Green-bearded Helmetcrest (Oxypogon guerinii) [XC693731]
by Diana Carolina Macana from PNN Sumap\u00e1z, laguna de Chisac\u00e1, Colombia (call)
Subspecies
Closely related to Oreonympha, Metallura and Chalcostigma. Based on morphological differences, the subspecies could be considered four separate species.
The following 4 subspecies are recognised:
cyanolaemus cyanolaemus - North-eastern Colombia (Santa Marta). Considered by some authors to be a distinct species, Blue-bearded Helmetcrest (Oxypogon cyanolaemus).
lindenii (Parzudaki, 1845) - Andes of north-western Venezuela (Mérida, Trujillo). Considered by some authors to be a distinct species, White-bearded Helmetcrest (Oxypogon lindenii).
guerinii (Boissonneau, 1840) - Eastern Andes of Colombia (south to Cundinamarca).
stuebelii A. B. Meyer, 1884 - Central Colombia (Nevado del Ruiz). Considered by some authors to be a distinct species, Buffy Helmetcrest (Oxypogon stuebelii).