The Black-breasted Puffleg Hummingbird

NOT FOUND IN THE UNITED STATES:  The Black-breasted Puffleg (Eriocnemis nigrivestis)

 

The Black-breasted Puffleg is a hummingbird species native to Ecuador and does not migrate to the United States. Its range is restricted to the northwestern slopes of the Andes in Ecuador.

Migration Pattern

This species is considered sedentary—it does not undertake long-distance migrations. It remains within its limited montane forest habitat year-round.

Appearance

The Black-breasted Puffleg is a small hummingbird with striking coloration:

*   Males: Glossy black breast and belly, iridescent blue-green upperparts, and white leg tufts (“pufflegs”).

*   Females: Similar but duller, with more green on the upperparts and less black on the belly.

Nesting Habits

*   Nests are built in dense, humid montane forests, typically on horizontal branches or in sheltered spots.

*   The nest is cup-shaped, made from plant fibers and moss, camouflaged with lichens.

Clutch Frequency

*   Like most hummingbirds, the Black-breasted Puffleg lays 2 eggs per clutch.

*   It is believed to have 1–2 clutches per year, but exact data is limited due to its rarity.

Endangered Status

 

*   The Black-breasted Puffleg is critically endangered. Fewer than 250 individuals remain, mainly due to habitat loss from deforestation and human development. Conservation efforts are ongoing, but its survival is at high risk.

Other Examples of Hummingbirds Not Found in the United States

*   Mangrove Hummingbird (Chrysuronia boucardi): Found only in mangrove forests along Costa Rica’s Pacific coast. Endangered due to habitat loss.

*   Juan Fernández Firecrown (Sephanoides fernandensis): Native to Robinson Crusoe Island off Chile, critically endangered.