Coucou écureuil

En bref

  • Scientific Name: Piaya cayana
  • Spanish Name: Cuco ardilla común
  • Famille : Cuculidae
  • Known Nicknames: Squirrel Cuckoo, Red Cuckoo, Mexican Squirrel-Cuckoo
  • Average Length: 41–46 cm / 16–18 in
  • Average Weight: 95–120 g / 3.4–4.2 oz
  • Wingspan: 38–43 cm / 15–17 in
  • Key Feature: Long, graduated tail with white tips and rufous body
  • Régime alimentaire principal : Principalement insectivore
  • Range: Southern Sonora and Tamaulipas (Mexico) to northern Argentina and Uruguay
  • Habitat: Forest edges, secondary growth, clearings, and riparian woodlands
  • Structure sociale : Solitaires ou en couples
  • Nesting/Breeding: Open cup nest in trees or shrubs
  • Statut de conservation : Préoccupation mineure (LC)
  • Évolution démographique : Stable

The **Common Squirrel-Cuckoo (*Piaya cayana*)** is a striking, long-tailed bird found from Mexico through much of South America, named for its squirrel-like, scurrying movements as it hops along branches in search of prey. Its general appearance is unmistakable: rich, rufous-chestnut upperparts contrast with a pale gray throat and breast, while the elongated, graduated tail is boldly patterned with white-tipped black feathers. A unique characteristic is its bright yellow bill and red orbital skin around the eye, giving it an almost masked appearance. This cuckoo is a specialist hunter of large, hairy caterpillars, which it deftly beats against a branch to remove toxins before swallowing—a special feeding adaptation that sets it apart from many other insectivores.

Faits amusants

Despite its name, the Common Squirrel-Cuckoo rarely acts like a squirrel; instead, it hunts large, hairy caterpillars that most birds avoid, using its specialized stomach lining to shed the toxic spines. It is a notorious nest parasite, often laying its own eggs in the nests of other birds, but unlike its cuckoo relatives, it sometimes raises its own young. Its long, graduated tail and chestnut-brown back allow it to vanish into the canopy, where it performs a bizarre “wing-flip” display—rapidly snapping one wing open and shut—to startle insects into movement. Additionally, it has a unique, hollow, descending call that sounds like a rusty gate swinging shut, often repeated in a series that locals interpret as a weather predictor.

Habitats et répartition

The Common Squirrel-Cuckoo is found from northwestern Mexico through Central America and across most of South America east of the Andes, extending south to northern Argentina and Uruguay. Its range also includes Trinidad and Tobago. This species inhabits a wide variety of forested environments, including tropical and subtropical lowland rainforests, gallery forests, deciduous woodlands, and secondary growth. It is also common in forest edges, plantations, and semi-open areas with tall trees, but it avoids dense, closed-canopy forests and arid regions. The bird typically occupies elevations from sea level up to around 2,000 meters.

Comportements & Reproduction

The Common Squirrel-Cuckoo is generally solitary or found in pairs, with a social structure centered on a monogamous bond during the breeding season. Mating involves mutual displays where the birds bow, raise their tails, and exchange soft calls or food items. Unlike many cuckoos, it is not a brood parasite; instead, both parents share in building a shallow cup nest of twigs and leaves, typically placed in dense foliage. The female lays two to three white eggs, and both sexes incubate them for about 18 days. After hatching, the parents cooperatively feed the chicks, which fledge in roughly two weeks, and the family group may remain together for a short period before the young disperse.

Alimentation

The Common Squirrel-Cuckoo is primarily an insectivore and frugivore, with a diet heavily dominated by large, hairy caterpillars, which many other birds avoid due to their irritating spines; the cuckoo skillfully beats these caterpillars against a branch to remove their gut contents before swallowing. It also hunts a wide variety of other arthropods, including grasshoppers, cicadas, spiders, beetles, and mantises, often gleaning them from foliage or snatching them in mid-air during short, agile flights. Interestingly, this species has been observed raiding the nests of other birds to consume eggs and nestlings, and it will occasionally supplement its diet with small fruits, berries, and even small lizards or tree frogs, making it a surprisingly opportunistic feeder within its tropical forest habitat.

Couleurs

The Common Squirrel-Cuckoo has a warm, rufous-chestnut back, wings, and tail, with the long tail featuring broad black and white bands underneath. Its head and underparts are a contrasting pale gray, with a bare yellow eye-ring and a greenish-yellow bill. This coloration provides excellent camouflage among dappled forest light, mimicking the movement and coloration of a squirrel as it hops along branches.