Greenish puffleg

Haplophaedia aureliae

Cali Valle Del Cauca Colombia

Quick Facts

  • Scientific Name: Haplophaedia aureliae
  • Spanish Name: Calzadito verdoso
  • Family: Trochilidae
  • Known Nicknames: Aurelia's Puffleg
  • Average Length: 9–11 cm / 3.5–4.3 in
  • Average Weight: 5.2–6.5 g / 0.18–0.23 oz
  • Wingspan: 11–13 cm / 4.3–5.1 in
  • Key Feature: Distinctive white downy leg tufts and coppery-green plumage
  • Primary Diet: Nectarivore (Nectar and small arthropods)
  • Range: Andes of Colombia, Ecuador, and Eastern Panama
  • Habitat: Humid montane forest, cloud forest, and forest edges
  • Social Structure: Solitary
  • Nesting/Breeding: Cup nest composed of moss and spider silk in low vegetation
  • Statut de conservation : Préoccupation mineure (LC)
  • Population Trend: Stable

The Greenish puffleg (*Haplophaedia aureliae*) is a captivating hummingbird native to the lush, montane forests of the Andes, distinguished by its subtle beauty and remarkable physical adaptations. While it lacks the flamboyant iridescent throat patches of many relatives, it boasts a sophisticated palette of deep bronzy-green plumage complemented by a shimmering coppery-gold rump and a dark, slightly forked tail. Its most iconic feature is the pair of dense, snow-white "puffs" of downy feathers encircling its legs, which stand out vividly against its dark body and serve as a hallmark of the species. These agile high-altitude specialists are often seen darting through the misty understory or hovering with precision at tubular flowers, combining a quiet elegance with the high-energy lifestyle typical of the world's most enchanting avian wonders.

Faits amusants

The Greenish puffleg is a master of "trap-lining," a foraging strategy where it memorizes a specific circuit of flowers to visit in a precise order rather than defending a single territory. To survive the frequent downpours of the cloud forest, it cleverly builds its nest on the underside of large, drooping leaves, using them as natural umbrellas to keep its chicks dry. Its most iconic feature is the pair of dense, snowy-white "pantaloons"—downy tufts of feathers on its legs that make it look like it is wearing tiny cotton boots. Unlike many of its flashier hummingbird relatives, this bird is uniquely adapted to the dim, shadowy understory, where its subdued olive plumage serves as perfect camouflage while it flits low to the ground.

Habitats et répartition

This species is primarily distributed along the slopes of the Andes in Colombia and Ecuador, with its range extending into the highlands of eastern Panama. It inhabits humid montane forests, cloud forests, and dense forest edges, typically favoring the shaded understory. Its elevational range generally spans from 1,500 to 3,100 meters above sea level, though it may occasionally be found as low as 1,100 meters in some regions.

Comportements & Reproduction

These birds are primarily solitary and exhibit territorial behavior, though they are often seen foraging as "trap-liners," following specific routes to visit nectar-rich flowers in the forest understory. They generally avoid large mixed-species flocks, preferring to remain inconspicuous within the lower levels of the vegetation. Social interactions are brief and typically limited to territorial defense or mating encounters, as the species does not form long-term pair bonds or social groups. In terms of reproduction, males perform aerial displays to attract females but do not participate in nesting or chick-rearing. The female is solely responsible for constructing a cup-shaped nest, often made of moss and spider silk, which she frequently attaches to the underside of a large leaf or fern for protection from the rain. She typically lays two eggs and provides all the necessary care for the offspring until they fledge. This strategy relies on selecting well-sheltered nesting sites to ensure the survival of the young in their humid montane habitat.

Alimentation

The Greenish puffleg primarily sustains itself on a diet of nectar collected from a diverse range of flowering plants, showing a particular preference for the tubular blooms of families like Ericaceae, Gesneriaceae, and Rubiaceae. In an interesting departure from the territorial behavior seen in many hummingbirds, this species is a dedicated "trap-liner," meaning it follows a regular, established circuit to visit scattered flowers throughout the forest understory rather than aggressively defending a single patch. To balance its high-sugar intake with necessary proteins and minerals, the Greenish puffleg also actively hunts small arthropods and insects, utilizing techniques such as gleaning prey from foliage or performing acrobatic aerial maneuvers to catch them in mid-flight. This combination of nectarivory and insectivory ensures the bird maintains the high energy levels required for its life in the humid montane forests of the Andes.

Couleurs

The Greenish puffleg is characterized by dark metallic green plumage with a coppery sheen and distinctively scaly underparts edged in grey or buff. It features namesake white or buff leg puffs and a dark, steel-blue forked tail, providing effective camouflage within the shaded understory of Andean cloud forests.