Black-breasted Puffleg

Here the details of the Black-breasted Puffleg named bird below:

SCI Name:  Eriocnemis nigrivestis
Protonym:  Trochilus nigrivestis Ann.Sci.Phys.Nat.Agric.Ind.(2), 4 p.144
Taxonomy:  Caprimulgiformes / Trochilidae / Eriocnemis
Taxonomy Code:  blbpuf3
Type Locality:  Tumbaro [i.e. Tumbaco], Ecuador.
Author:  Bourcier & Mulsant
Publish Year:  1852
IUCN Status:  Endangered

DEFINITIONS

ERIOCNEMIS
(Trochilidae; Ϯ Coppery-bellied Puffleg E. cupreoventris) Gr. εριον erion  wool; κνημις knēmis, κνημιδος knēmidos  boot, legging. Reichenbach's 1849, plate XL, labelled Trochilinae. Mellisuginae. Phaetorninae, clearly shows the fluffy tarsal tufts typical of these hummingbirds; "The sexes are very much alike, and both have the white muff-like decoration on the leg, but it is not so much developed in the female as in the male" (Gould 1861); "Eriocnemis Reichenbach, Av. Syst. Nat. [1849], pl. xl. Generic details only, no species. Type, by subsequent designation, Eriopus simplex Gould = Trochilus cupreo-ventris Fraser (Gould, Monogr. Trochil. pt. 3, 1852, pl. [8] and text)." (Peters, 1945, V, p. 108).   
Var. Eriocnemys, Euryocnemis.   
Synon. Aline, Derbyomyia, Engyete, Erebenna, Eriona, Eriopus, Luciania, Mosqueria, Nania, Niche, Phemonoe, Pholoe, Threptria, Vestipedes.

nigrivestis / nigrivestris
L. niger black; vestis garment.