Saffron-cowled blackbird (Xanthopsar flavus)

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Saffron-cowled blackbird
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Saffron-cowled blackbird fact file

Saffron-cowled blackbird description

KingdomAnimalia
PhylumChordata
ClassAves
OrderPasseriformes
FamilyIcteridae
GenusXanthopsar (1)

The male of this species has strikingly contrasting bright yellow head, rump and underparts against its black nape, upperparts, tail, bill and legs. The female is less brilliantly coloured, with a streaky olive-brown crown and upperparts, and yellow rump, eyebrow and underparts. In both sexes a dark brown stripe runs from the bill to the eye. They sing a high-pitched song with a short trill, and call with a harsh ‘tchep(2).

Also known as
Agelaius flavus.
Spanish
Dragón, Mirlo Americano Pechiamarillo, Tordo Amarillo, Tordo de Cabeza Amarilla.
Size
Length: 18 cm (2)
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Saffron-cowled blackbird biology

This highly sociable bird feeds in groups, searching for arthropods amongst low vegetation. Nests may be built away from other monogamous pairs, or in colonies of up to 40 pairs (5). They are constructed in vegetation by the female who lays eggs between September and January. During incubation the male feeds himself and the female as well as defending the territory. Both parents contribute to feeding the young (2).

In 1999 the saffron-cowled blackbird was put into the genus Agelaius with similar Nearctic and Caribbean blackbirds. However, this decision has been widely refuted and as yet has been adopted only by the Convention on Migratory Species (6).

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Saffron-cowled blackbird range

The range of this blackbird is shrinking and it is now only locally abundant in south Brazil, east Paraguay, Uruguay and northeast Argentina (2).

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Saffron-cowled blackbird habitat

Feeding on agro-pastoral land, the saffron-cowled blackbird breeds in dense marsh vegetation throughout its range (2).

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Saffron-cowled blackbird status

The saffron-cowled blackbird is classified as Vulnerable (VU A2cde + 3cde; C2a(i)) on the IUCN Red List 2004 (1) and is listed on Appendix I of CITES (3). In Denmark and Uruguay it is listed on Appendix III of CITES (3). It is also listed on Appendix I of the Convention on Migratory Species (CMS or Bonn Convention) but under the name Agelaius flavus (4).

IUCN Red List species status – Vulnerable

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Saffron-cowled blackbird threats

The grasslands in the range of this species are now used for grazing, agriculture, pine and eucalyptus plantations, and settlements. Combined with the damming of marshy valleys in Argentina, the available habitat of the saffron-cowled blackbird is declining sharply. Fire in Paraguay has destroyed whole colonies of nests and the decline in numbers of nesting birds has resulted in the natural brood parasitism by the shiny cowbird becoming a threat. This attractive bird is also threatened by capture for the pet trade (2).

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Saffron-cowled blackbird conservation

The saffron-cowled blackbird is legally protected in Brazil and occurs in at least five protected areas throughout its range. As this species is very mobile, reserves prove inadequate at protecting it since they do not cover the whole area occupied by the birds. There has been an experimental reintroduction following rescue from the pet trade of seven birds, which was partially successful. Research into brood parasitism by shiny cowbirds may prove to be crucial in preventing this threat becoming further compounded. Fencing grazers out of traditional nesting sites is being considered (2). The Convention on Migratory Species is funding a project to estimate the dispersal range of this bird, as well as the amount of gene flow between populations (4).

View information on this species at the UNEP World Conservation Monitoring Centre.
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Find out more

For further information on the conservation of this species see the CMS Project:
http://www.cms.int/news/PRESS/nwPR2003/nw070503_blackbird.htm

For more information on the taxonomy of this species see the Louisiana Museum of Natural History:
http://www.museum.lsu.edu/~Remsen/SACCProp78.html

For more information on this and other bird species please see:

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Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact: arkive@wildscreen.org.uk
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Glossary

Arthropoda
A very diverse phylum (a major grouping of animals) that includes crustaceans, insects and arachnids. All arthropods have paired jointed limbs and a hard external skeleton (exoskeleton).
Monogamous
Having only one mate during a breeding season, or throughout the breeding life of a pair.
Reintroduction
Putting an animal or plant into an area where the species or sub-species previously lived but from which they are locally extinct - usually referring to projects aiming to re-establish self-perpetuating populations.
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References

  1. IUCN Red List (April, 2005)
    http://www.redlist.org
  2. BirdLife International (April, 2005)
    http://www.birdlife.org/datazone/search/species_search.html?action=SpcHTMDetails.asp&sid=9839&m=0
  3. CITES (April, 2005)
    http://www.cites.org
  4. CMS Project (April, 2005)
    http://www.cms.int/news/PRESS/nwPR2003/nw070503_blackbird.htm
  5. Fraga, R.M. (2005) Ecology, behaviour and social organisation of saffron-cowled blackbirds (Xanthopsar flavus). Ornithologia Neotropical, 16(1): 15 - 29.
  6. Louisiana Museum of Natural History (April, 2005)
    http://www.museum.lsu.edu/~Remsen/SACCProp78.html
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Image credit

Saffron-cowled blackbird  
Saffron-cowled blackbird

© Roberto Güller

Roberto Güller
rmguller@uolsinectis.com.ar

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