Engoulevent pauraqué

En bref

Nocturne
  • Scientific Name: Nyctidromus albicollis
  • Spanish Name: Chotacabras pauraque
  • Family: Caprimulgidae
  • Known Nicknames: Pauraque, Common Pauraque, Nightjar
  • Average Length: 25–30 cm / 10–12 in
  • Average Weight: 55–80 g / 1.9–2.8 oz
  • Envergure : 50 à 60 cm / 20 à 24 pouces
  • Key Feature: Cryptic, mottled brown and gray plumage with white wing patches and tail corners
  • Régime alimentaire principal : Principalement insectivore
  • Range: Southern Texas (USA) through Central America and South America to northern Argentina and Uruguay
  • Habitat: Open woodlands, forest edges, scrublands, and savannas
  • Structure sociale : Solitaire
  • Nesting/Breeding: Ground scrape in leaf litter
  • Statut de conservation : Préoccupation mineure (LC)
  • Évolution démographique : Stable

The Common Pauraque (*Nyctidromus albicollis*) is a master of nocturnal camouflage, a nightjar of the American tropics that blends seamlessly into the leaf litter of forest edges and scrublands. Its general appearance is a cryptic tapestry of mottled browns, grays, and buffs, with a long tail and a small, flat head that lacks the bristles typical of many nightjars. Its most unique characteristic is its haunting, whistled song—a descending, plaintive *pwee-you* or *pauraque*—that gives the bird its onomatopoeic name. A special feature is its habit of resting on the ground during the day, relying on its perfect camouflage to remain invisible until nearly stepped upon, then exploding into a silent, moth-like flight that reveals a flash of white in its outer tail feathers.

Faits amusants

The Common Pauraque is a master of optical illusion: when threatened, it freezes and flattens its body against the leaf litter, closing its eyes to expose only the dark stripe that mimics a twig, making it nearly invisible. It has a bizarre, rhythmic call that sounds like a mechanical “whirrrrrr-up” repeated in the dark, often mistaken for a distant engine. Unlike most birds, it lays its eggs directly on the ground without any nest, relying entirely on its cryptic camouflage. A quirky behavior is its “wing-snap” display during courtship, where it claps its wings together sharply above its back to produce a loud, startling crack.

Habitats et répartition

The Common Pauraque is found from southern Texas through Mexico and Central America, across most of South America east of the Andes down to northeastern Argentina and Uruguay. It inhabits a wide range of open to semi-open environments, including dry and humid forests, scrublands, savannas, thorn forests, plantations, and suburban areas with scattered trees. It prefers habitats with leaf litter on the ground for camouflage, often resting on forest edges, clearings, or along roadsides, and avoids dense, humid rainforest interiors.

Comportements & Reproduction

The Common Pauraque is a solitary, nocturnal bird that does not form lasting pair bonds; instead, males establish and defend small territories, attracting females through vocalizations and low, fluttering display flights at dusk. Mating is brief and occurs after a short courtship chase, with no elaborate rituals beyond the male’s persistent calling. The female lays two eggs directly on the forest floor, relying on cryptic plumage for camouflage, and incubation is shared primarily by the female during the day and the male at night. A unique reproductive strategy is the species’ ability to move the eggs or chicks short distances by rolling them with the bill if disturbed, though this is rarely observed. Chicks are precocial and leave the nest within hours of hatching, hiding separately under leaf litter while parents feed them regurgitated insects until fledging at about two weeks.

Alimentation

The Common Pauraque is an exclusively insectivorous bird, hunting almost entirely at night by sallying from a perch or the ground to snatch flying prey from the air. Its diet consists primarily of moths, beetles, flying ants, termites, grasshoppers, and other nocturnal insects, which it captures with its wide, gaping mouth. Interestingly, Pauraques do not drink water in the conventional sense; they obtain all necessary moisture from the body fluids of their insect prey. Another notable dietary fact is their reliance on "moon-watching"—they often forage more actively on moonlit nights, as the increased visibility allows them to spot flying insects silhouetted against the bright sky, making lunar phases a significant factor in their feeding success.

Couleurs

The Common Pauraque has intricate, mottled brown, gray, black, and buff plumage that provides exceptional camouflage against leaf litter. It features a white throat patch, bold white wing bands visible in flight, and a long tail with barred patterns. The large dark eyes and cryptic coloration allow it to blend seamlessly into its forest floor habitat.