<trp-post-container data-trp-post-id='356902'>Highland Guan

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Pénélope des hauts plateaux dans son habitat naturel

En bref

  • Scientific Name: Penelopina nigra
  • Spanish Name: Pava negra
  • Famille : Cracidae
  • Known Nicknames: Black Pajuil, Black Penelopina, Chachalaca Negra, Pajuí
  • Average Length: 59–65 cm / 23–26 in
  • Average Weight: 850–1000 g / 1.9–2.2 lb
  • Wingspan: 70–80 cm / 28–31 in
  • Key Feature: Extreme sexual dimorphism: males are glossy black with a bright red throat wattle, bill, and legs, while females are barred rufous-brown with no wattle
  • Primary Diet: Primarily Frugivore (fruits, berries, and occasionally insects)
  • Range: Highlands of Southern Mexico, Guatemala, El Salvador, Honduras, and northern Nicaragua
  • Habitat: Humid montane cloud forests and pine-oak forests
  • Structure sociale : Solitaires ou en couples
  • Nesting/Breeding: Nests built of twigs and leaves high in forest trees, often hidden by epiphytes
  • Statut de conservation : Vulnérable (VU)
  • Évolution démographique : En baisse

The Highland Guan (*Penelopina nigra*) is a striking, forest-dwelling bird native to the humid montane cloud forests of Central America, renowned for an extreme sexual dimorphism that is highly unusual among its cracid relatives. The male is a vision of dramatic elegance, boasting glossy, raven-black plumage with a metallic blue-green sheen, contrasted sharply by a vibrant, fleshy red throat wattle, red bill, and matching legs. In stark contrast, the female is masterfully camouflaged in a rich, rufous-brown coat intricately barred with black, allowing her to blend seamlessly into the dense canopy. Beyond their captivating appearance, these elusive, vulnerable birds are celebrated for their unique courtship ritual, during which males perform a spectacular aerial dive, vibrating their wings to produce a loud, mechanical rattling sound that echoes through the misty highlands.

Faits amusants

This elusive bird is a master of theatrical deception; the glossy black males with their vibrant red throat wattles look so radically different from the barred-brown females that early naturalists mistook them for entirely different species. During courtship, males perform a dramatic aerial dive while using their wings to produce a bizarre, mechanical rattling noise that sounds exactly like tearing paper or a creaking tree. When not showing off, they often skip flying altogether, instead leaping and scrambling through the mossy cloud forest canopy like feathered squirrels using their powerful, grippy claws.

Habitats et répartition

This species is native to the highlands of Central America, with a geographical range extending from southern Mexico, specifically the state of Chiapas, southward through Guatemala, El Salvador, and Honduras, to its southern limit in north-central Nicaragua.

Within this range, it primarily inhabits humid subtropical and tropical montane forests, with a strong preference for pristine cloud forests and dense pine-oak woodlands. It is typically found at elevations between 500 and 2,500 meters above sea level, where it relies heavily on the dense canopy and lush understory of mature, undisturbed forest environments.

Comportements & Reproduction

Primarily arboreal and notoriously secretive, this species spends most of its time in the dense canopy of humid montane cloud forests. Generally solitary or found in pairs, they may occasionally gather in small, loose groups at abundant fruiting trees. During the breeding season, males become highly territorial, using a variety of guttural calls to defend their foraging and nesting areas from rivals.

To attract mates, males perform a spectacular and unique aerial courtship display known as "wing-whirring." A male will launch into a short flight or glide between branches, producing a loud, mechanical rattling sound with his wings, which is immediately followed by a high-pitched, whistling call. Once mating occurs, the female takes on all nesting duties, constructing a well-concealed, simple nest of twigs and leaves high in the forest canopy where she typically lays a clutch of two eggs and incubates them alone.

Alimentation

The Highland Guan (*Penelopina nigra*) is primarily a frugivorous bird, sustaining itself on a diverse diet of wild fruits, berries, and seeds harvested from the canopy and understory of its montane cloud forest habitat. An interesting aspect of its feeding ecology is its versatility as both an arboreal and terrestrial forager; while it frequently plucks ripe fruits directly from tree branches, it also descends to the damp forest floor to scratch through leaf litter in search of fallen fruits, seeds, and small invertebrates like insects. Furthermore, because it consumes a vast quantity of fruits and passes the seeds intact through its digestive system, this species acts as a crucial ecological seed disperser, playing a vital role in the regeneration and maintenance of its threatened forest ecosystem.

Couleurs

The Highland Guan exhibits striking sexual dimorphism: males are entirely glossy blue-black, contrasted by a vibrant red bill, legs, and fleshy throat wattle, while females are covered in a heavily barred rufous-brown and black pattern that provides excellent camouflage against the dappled light of the forest understory.

Distribution Map

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