Rufous-collared Sparrow

En bref

  • Scientific Name: Zonotrichia capensis
  • Spanish Name: Chingolo
  • Family: Passerellidae
  • Known Nicknames: Andean Sparrow, Chingolo, Copetón
  • Average Length: 13.5–15 cm / 5.3–5.9 in
  • Average Weight: 18–25 g / 0.63–0.88 oz
  • Wingspan: 20–23 cm / 7.9–9.1 in
  • Key Feature: Rufous nape collar and black-and-white striped crown
  • Primary Diet: Primarily Granivore (seeds), also insectivore
  • Range: Central Mexico to Tierra del Fuego (South America)
  • Habitat: Open and semi-open areas, grasslands, agricultural fields, urban gardens
  • Social Structure: Social; often found in pairs or small flocks
  • Nesting/Breeding: Cup-shaped nest in shrubs, trees, or on the ground
  • Statut de conservation : Préoccupation mineure (LC)
  • Évolution démographique : Stable

The Rufous-collared Sparrow (*Zonotrichia capensis*) is a charismatic and widespread songbird of Central and South America, instantly recognizable by its striking **rufous (reddish-brown) nape and collar** that contrast sharply with a neat gray head and bold black-and-white crown stripes. Its general appearance is that of a small, plump sparrow (about 14 cm long) with a stout, conical bill, brown-streaked back, and plain grayish underparts. A special feature is its highly variable, melodic song—often a clear, descending whistle—which can differ dramatically across its vast range, from Costa Rica to Tierra del Fuego. Remarkably adaptable, this species thrives in diverse habitats from high-altitude Andean grasslands to urban gardens, and it is a common sight foraging on the ground for seeds and insects, often in small, chattering flocks.

Faits amusants

The Rufous-collared Sparrow is a master of musical dialects, with males in different geographic regions—even just a few kilometers apart—singing distinct local versions of their song, a trait that helps them defend territories against neighbors while confusing outsiders. It has a bizarre anti-predator tactic called “bill-tucking,” where it fluffs its feathers and tucks its head under its wing to look like a dead leaf when a hawk or snake approaches. Remarkably, this species can breed year-round in tropical climates, sometimes raising up to four broods annually, and parents have been observed feeding their chicks seeds before they can fly—a rare behavior among sparrows that usually stick to insects for nestlings.

Habitats et répartition

The Rufous-collared Sparrow occupies an extraordinarily broad range of habitats across Central and South America, from lowland tropical forests and arid scrublands to high-altitude páramo grasslands and urban gardens. It thrives in open to semi-open environments with scattered shrubs, forest edges, agricultural fields, and disturbed areas, often adapting well to human settlements. Its geographical distribution extends from southern Mexico and Central America through the Andes and across much of South America, including Chile, Argentina, Bolivia, Peru, Ecuador, Colombia, Venezuela, and Brazil, as well as the Guianas and Trinidad. Notably, it is absent from the Amazon Basin’s dense rainforest interior, but it is common in montane regions up to 4,500 meters in elevation, making it one of the most widespread and adaptable New World sparrows.

Comportements & Reproduction

Rufous-collared Sparrows are socially monogamous, with pairs forming during the breeding season, though extra-pair copulations occur regularly. Males defend small territories and attract females through song, often perching conspicuously while singing repetitive phrases unique to their local dialect. The female builds a cup-shaped nest of grass and rootlets, typically in a bush or tree fork, and lays two to four pale blue eggs with brown speckles. Incubation lasts about 12–14 days and is performed solely by the female, while both parents feed the nestlings. A notable reproductive strategy is their ability to breed multiple times per season, re-nesting quickly after a successful fledging or failure, which allows them to exploit seasonal food pulses across their wide Andean range. Juveniles often join loose flocks after independence, but there is no strong cooperative breeding structure beyond the core pair.

Alimentation

The Rufous-collared Sparrow is primarily a granivore, with seeds making up the bulk of its diet, especially those from grasses and weeds. However, it is an opportunistic omnivore that adapts its feeding habits based on seasonal availability. During the breeding season, adults shift to consuming a high proportion of insects and other arthropods, such as beetles, caterpillars, and spiders, to provide protein for their growing chicks. Interestingly, this species has been observed gleaning insects from foliage and even catching flying termites in mid-air during swarms. In urban and agricultural areas, they readily visit bird feeders for sunflower seeds and cracked corn, and they are known to forage on the ground in small flocks, often scratching the leaf litter with both feet simultaneously to uncover hidden seeds and invertebrates.

Couleurs

The Rufous-collared Sparrow has a distinctive gray head with bold black crown stripes, a white supercilium, and a rufous nape and sides of the neck that form a partial collar. Its back is streaked brown and black, with gray underparts and a central black breast spot. The wings show two white wing bars. This pattern provides camouflage in dry brush and grasslands, with the rufous collar being a unique field mark absent in most other sparrows.