Black flowerpiercer

13–14 cm with adults uniformly black (slightly glossy black with subtle blue gloss in males). They have brown eyes and a black bill with a grey base. Females are a duller black with no blue gloss and their wings and tail are brownish. Juvenile birds are also duller.

Three captured black flowerpiercers

• D.h. aterrima (Ecuador, south Colombia)- same description as above
• D.h. humeralis (East Andes in north & south Colombia, southwest Venezuela)- Male dull black with blueish shoulder and small greyish rump; Females are very dark brown with the grey rump less clear.
• D.h.nocticolor (Santa Marta in Colombia, Perija in Venezuela)- All black with only slight gloss and dark grey rump, female slightly duller than male

A rapid series of squeaky trills and twitters even faster than the glossy flowerpiercer (Diglossa lafresnayii). The black flowerpiercer sounds almost like the cinereous conebill (Conirostrum cinereum).

Found in Ecuador, Colombia, Peru, and Venezuela. Subtropical zone to Paramo, at 2,175 - 4,000m, but mostly in 2,700 - 3,400m at edges of dense wet forest. Also found in scattered vegetation, shrubby clearings, eucalyptus plantations, parks, and gardens.

Drinks nectar and consumes small invertebrates. Black flowerpiercers move quickly and are more active in lower parts of the forest. They are mainly solitary or found in pairs.

• Restall, Robin, Clemencia Rodner, and Miguel Lentino. Birds of Northern South America. Vol. 1. US: Yale University Press, 2006. 654. 2 vols. Print.