Overview

Distribution

Range Description

This species breeds in Bolivia, Brazil, Paraguay and Argentina, and is at least partly migratory, with records from Panama, Colombia, Suriname, Venezuela and French Guiana in the austral winter.
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Range

Colombia to the Guianas, Brazil, n Paraguay and nw Argentina.
  • Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2014. The eBird/Clements checklist of birds of the world: Version 6.9. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
The species' main habitats are lowland evergreen forest edge, secondary forest, and second-growth scrub (Chantler 1999).

Systems
  • Terrestrial
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
BirdLife International

Reviewer/s
Butchart, S. & Symes, A.

Contributor/s

Justification
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
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Population

Population
The global population size has not been quantified, but the species is described as common in its breeding range and less common in its wintering range (del Hoyo et al. 1999).

Population Trend
Stable
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Wikipedia

Sick's swift

The Sick's swift (Chaetura meridionalis) is a species of swift in the Apodidae family. It was previously considered conspecific with the smaller ashy-tailed swift, but Marín (1997) found that Sick's swift was closer to the chimney swift. It is a migratory species that breeds in central South America and overwinters in northern South America. The IUCN has listed it as being of "Least Concern".

Description[edit]

The upperparts dark smoky brown. The tail is ashy grey with dark shafts and protruding spines, The throat is grey, lower underparts dark brown, bill and legs black.

Behaviour[edit]

Breeding[edit]

The nest, typically placed in a chimney or a hollow tree, is an open cup similar in construction to that of the chimney swift. Constructed almost entirely of one type of dry leaf stalks having a length of 5 cm. The structure of the nest lacks density and is transparent. Adhesive saliva is used on the place of the attachment of the nest and to a lesser degree on its front side. The nest does not have a rear wall, which is represented by the side of the tree. the breeding period of the Chaetura corresponds with the end of the dry season to the beginning of the rainy period. Theis reused until it falls down, on which occasion the same location is used to build a new nest. Clutch size is 3-5 eggs, the female incubates but both parents feed the young.

Feeding[edit]

Sick's swift feeds in flight on flying insects. It often flies low over roads or clearings in the morning or evening, rising high above the forest, often with other swifts, in the middle of the day.

Distribution and habitat[edit]

It breeds in south-eastern Brazil and adjacent parts of Argentina, Paraguay and Bolivia, but is believed to spend the Austral winter further north in the Amazon basin, northern South America and Panama. Its exact wintering range is, however, poorly known due to the highly complex matter of field identification of a number of very similar Chaetura swifts found in central and northern South America. In addition to the previously mentioned countries, there are records from Colombia, Venezuela, Suriname and French Guiana.

It is generally common, but confirmed records outside its breeding range (where it is the only large Chaetura swift, and therefore relatively easy to identify) are infrequent. Its preferred habitat is lowland evergreen forest edge, secondary forest, open woodland and second-growth scrub but it can be seen flying over virtually any habitat during its annual migration.[2]

Status[edit]

The population size for the Sick's swift has not been estimated but it is said to be common within its breeding range, which covers over 5,000,000 km2 (1,900,000 sq mi), and less common in its wintering range. There is no evidence that the population is declining nor are there any particular threats to this bird apparent, so the IUCN has listed this species as being of "Least Concern".[2]

References[edit]

  1. ^ BirdLife International (2012). "Chaetura meridionalis". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013. 
  2. ^ a b "Species factsheet: Chaetura meridionalis". BirdLife International. Retrieved 2013-12-21. 
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