Dalmatian blue raven

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Dalmatian blue raven
Dalmatian blue raven (Cyanocorax cristatellus)

Dalmatian blue raven ( Cyanocorax cristatellus )

Systematics
Order : Passerines (Passeriformes)
Subordination : Songbirds (passeri)
Superfamily : Corvoidea
Family : Corvids (Corvidae)
Genre : Blue raven ( Cyanocorax )
Type : Dalmatian blue raven
Scientific name
Cyanocorax cristatellus
( Temminck , 1823)

The Krauskopf blue raven ( Cyanocorax cristatellus ) is a raven bird from the genus of the blue raven . It is common in South America in southern and southwestern Brazil and in the neighboring areas of Bolivia and Paraguay .

features

This blue raven is a bird up to 35 cm tall with a predominantly dark blue back, almost black head and neck, and snow-white chest and belly sides. They have a large forelock. This is larger on average in males, but the sexes are usually very similar.

The voice sounds like a crow.

distribution

In Brazil, the curly blue raven occurs in the south of the states of Pará , Maranhão and Piauí and in the west of the state of Bahia . The distribution area extends further south to the states of Mato Grosso do Sul and to the northeast of the state of Paraná . It is also native to eastern Paraguay (in the departments of Concepción and Canindeyú ) and eastern Bolivia (in the northeastern department of Santa Cruz ).

Way of life

Krauskopf blue ravens live in groups of 6 to 12 animals and form small breeding colonies. They eat almost anything, including the eggs and nestlings of other bird species, insects, and small vertebrates like geckos . They also feed on plant foods such as B. of fruits and palm nuts. Krauskopf blue ravens have even been observed to take nectar in a pequi tree ( Caryocar brasiliense ) in the early morning hours .

Danger

According to the IUCN , the species is not classified as endangered because of its large distribution area and the frequency of its occurrence as well as its great adaptability .

Taxonomy

The Krauskopf blue raven was described by Coenraad Jacob Temminck as Corvus cristatellus in 1823 . In 1850 Bonaparte established his own monotypical genus Uroleuca for him . This name refers to the white tail feathers in the upper half. In 1944 he was put back to the blue ravens by Dean Amadon . Today it is assumed that it forms a species group together with the hyacinth blue raven ( Cyanocorax violaceus ), the purple raven ( Cyanocorax cyanomelas ) and the azure raven ( Cyanocorax caeruleus ). There are no known subspecies.

etymology

The term "Cyanocorax" is of Greek origin and is made up of the words " κύανος kyanos " for "dark blue" and " κοραξ korax " for "raven". The specific epithet »cristatellus« comes from the Latin word »cristatus« for »crowned, feathered«.

literature

  • James A. Jobling: Helm Dictionary of Scientific Bird Names . Christopher Helm, London 2010, ISBN 978-1-4081-2501-4 .

Individual evidence

  1. ^ A b Sarah K. Reich: Cyanocorax cristatellus . TS Schulenberg (Ed.): Neotropical Birds Online . The Cornell Lab of Ornithology, Ithaca 2012. Retrieved October 26, 2013.
  2. ↑ a b c Curl-crested Jay ( Cyanocorax cristatellus ) in the Internet Bird Collection
  3. ↑ Cyanocorax cristatellus in the IUCN Red List of Threatened Species 2013.1. Listed by: BirdLife International, 2012. Retrieved October 23, 2013.
  4. ^ IOC World bird list - Vireos, crows, and allies ( Memento of April 5, 2014 in the Internet Archive )
  5. ↑ James A. Jobling, p. 126
  6. ↑ James A. Jobling, p. 122

Web links

Commons : Krauskopf-Blaurabe  - Collection of images, videos and audio files