The Dusky Starfrontlet is a hummingbird species that is found only at high altitudes in the Cordillera Occidental of Colombia. It was listed as a species of Least Concern in the IUCN Red List for many years, but became evident that it was close to extinction, and its status was upgraded to Critically Endangered in the 2007 Red List issue.
The Little Woodstar is a hummingbird species that is restricted to southwestern Ecuador and northwestern Peru. It is declining significantly due to rapid rates of deforestation.
The Dot-eared Coquette is a species of hummingbird found in Bolivia and Brazil. It is suspected that they will decline rapidly over the next three generations based on a model of future deforestation in the Amazon basin, and it has therefore been uplisted to Vulnerable.
The Blue-capped Hummingbird is a species of hummingbird endemic to subtropical moist forest in the southernmost portion of the Sierra Madre del Sur in the Mexican state of Oaxaca. It has a very small population size, which is likely declining as a result of habitat loss.
The Chilean Woodstar is a tiny and highly endangered hummingbird found very locally in the desert of northern Chile. In 2013, it was classed as endangered, but recently, it was classed as critically endangered by the IUCN Red List.
The Black Inca is a species of hummingbird endemic to Colombia. It was formerly classified as an endangered species but new research has shown it to be not as rare as it was believed. It was downlisted to Vulnerable in 2008 and remains endangered nationally in Colombia due to a 90% habitat loss.
Black-backed Thornbill is a species of hummingbird found in the Sierra Nevada de Santa Marta. They have very short bills and purplish-black forked tails. They are considered Endangered because they occupy a very small range, within which their suitable habitat is severely fragmented owing to deforestation, extensive burning and over-grazing.
Black-breasted Puffleg is a rare and critically endangered hummingbird species endemic to Ecuador. Known only from a few mountains west and north of Quito.