The buffy helmetcrest (Oxypogon stuebelii) is a Vulnerable species of hummingbird in the "coquettes", tribe Lesbiini of subfamily Lesbiinae.

The rest of the underparts are grayish bronzy that blends to cinnamon-buff on the undertail coverts.

Its upper side is coppery to bronzy green with the outer feathers showing a wide white stripe; the underside is rufous with some pale cinnamon.

The adult female is similar to the male but lacks the crest and beard, and its underparts are rufous buff to brownish with greenish flecks.

[6] The buffy helmetcrest is found only on Nevado del Ruiz, an active volcano in the Colombian Central Andes on the border of Tolima and Caldas departments and the surrounding area.

It has a very small range, and though much of that area is within Los Nevados National Park, its páramo habitat elsewhere is being rapidly degraded.