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Black-breasted puffleg | |
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Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Clade: | Strisores |
Order: | Apodiformes |
Family: | Trochilidae |
Genus: | Eriocnemis |
Species: | E. nigrivestis |
Binomial name | |
Eriocnemis nigrivestis | |
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The black-breasted puffleg (Eriocnemis nigrivestis) is a species of hummingbird native to Ecuador. It is Endangered, with an estimated 100-150 individuals remaining in the wild. [3]
The species reaches a length of 8–9 cm. It is sexually dimorphic, with the male having black upper- and underparts, dark blue tail coverts, and a violet-blue throat and undertail-coverts. The female is bronze-green above, bluish-green on rump and uppertail-coverts, golden-green underparts and a pale blue chin. Both sexes have a straight black bill, a forked tail and white pufflegs, from which the common name is derived. [1]
There is no characteristic vocalization; the species is generally quite silent, but may on occasion emit a monotonous and metallic "tseet tseet tseet" when it flies away.
The black-breasted puffleg is endemic to north-western Ecuador, where it currently appears restricted to the ridge crests of the Pichincha Volcano, the Cordillera de Toisán, Esmeraldas and Imbabura. Based on possible sightings in 1983 and 2010, it may still occur on Atacazo. Unconfirmed sightings exist for several other locations. It may be seen on the Reserva Yanacocha, just outside of Quito, managed by the Fundación Jocotoco. [4] The species occurs in humid and wet cloud and montane forest at altitudes of 1,700-3,500 m. [1]
Like most hummingbirds, the species primarily feeds on nectar and insects. It follows a seasonally changing feeding pattern based on available blooms (mostly ericas and fuchsias). Areas of forest with a high number of nectar-containing flowers will be heavily defended against other hummingbirds. [5]
In breeding season, the male performs short display flights in front of the female. The species is not monogamous, and males can copulate with several females in the same breeding season. The construction of the nest, the incubation and the care of the chicks are the responsibility of the female. The nest consists of moss and fibers, together with some animal fur and feathers. Some nests are built with spiders webs and others sticky materials, which allow the nest to stretch itself to twice its original size as the chicks grow. It is normally placed on low horizontal branches.
Two white eggs are usually incubated. The mother feeds them (by regurgitating) mostly on insects, as nectar does not contain enough protein to sustain chick growth. A nesting female can catch up to 2,000 insects per day. The chicks leave the nest after 20 days. The birds are altitudinal migrants, generally being found at altitudes of 2850–3500 m between April and September, but remaining above 3100 m during the breeding season from November to February. [5]
The black-breasted puffleg's response to microhabitats variations is extremely sensitive. It has been suggested that the species is under competitive disadvantage for the same ecological niche with others hummingbird species, specifically the Gorgeted sunangel, and that avoidance of forest borders is used to mitigate the stress imposed by the seasonal altitudinal migrations. [6]
The species is classified as Endangered by the IUCN based on its restricted range and extremely low population numbers. A 2015 assessment estimated a total number of 210-268 individuals (of which roughly 140-180 would be adults), and the population is believed to have shrunk by 10-20% per decade in the recent past. Although the black-breasted puffleg has recently been rediscovered in small populations outside its main range on the Pichincha volcano, its total area of occurrence is estimated as no larger than 80 km2. Of the habitat in its original range, 93-97% are considered to have been degraded or destroyed by agricultural expansion, logging and cattle grazing, and these practices remain the main threats to the species, together with natural and human-induced fires. [1]
A primary source of habitat loss has been the construction of the Oleoducto de Crudos Pesados (OCP) for oil transportation, a route that was established through one of the last remnants of forest.
On June 23, 2005, the Municipality of Quito adopted the black-breasted puffleg as the emblem of the capital city.
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The turquoise-throated puffleg, also known as Godin's puffleg, is a species of hummingbird from Ecuador. It is mostly green with blue undertail coverts and white powder-puffs of downy feathers on the legs, and the male has a bluish-purple throat patch. It is only known from a few specimens taken in the nineteenth century and its taxonomic position is unclear. The type of habitat in which the type species was obtained has largely disappeared, and recent surveys trying to find this bird have failed. The International Union for Conservation of Nature believes it may be extinct, but there is a possibility that some individuals remain, so the bird has been rated as "critically endangered".
Eriocnemis is a genus of hummingbirds, which - together with the species in the genus Haplophaedia - are known as pufflegs. They occur in humid forest, woodland and shrub at altitudes of 1000 to 4800 m. asl in the Andes of Argentina, Bolivia, Peru, Ecuador, Colombia, and Venezuela. The males have a colourful green, coppery or blue plumage, and the females are generally somewhat duller. The most striking feature of both sexes in the genus Eriocnemis are their dense snow-white leg-puffs which consist of feather tufts that resemble woolly panties. One species, the black-thighed puffleg - is characterized by black coloured leg-puffs. Most have a contrasting blue, purple or coppery-red vent, but this is green in the black-thighed and emerald-bellied puffleg. Further common features of all species are the straight black bill and the slightly to deeply forked tail. The genus name was coined by the German naturalist Ludwig Reichenbach who called them Snowy panties.
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The emerald-bellied puffleg is a species of hummingbird in the "brilliants", tribe Heliantheini in the subfamily Lesbiinae. It is found in Colombia, Ecuador, and Peru.
The coppery-bellied puffleg is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae. It is found in Colombia and Venezuela.
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The glowing puffleg is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae. It is found in Colombia, Ecuador, Peru, and Venezuela.
The greenish puffleg is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae. It is found in Colombia, Ecuador, Panama, and Peru.
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