Dark-headed leaf scout

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Dark-headed leaf scout
Systematics
Subordination : Screeching Birds (Tyranni)
Family : Potter birds (Furnariidae)
Subfamily : Furnariinae
Tribe : Philydorini
Genre : Cichlocolaptes
Type : Dark-headed leaf scout
Scientific name
Cichlocolaptes mazarbarnetti
Barnett & Buzzetti , 2014

The dark-headed leaf scout ( Cichlocolaptes mazarbarnetti ) is a most likely extinct passerine bird from the family of potters (Furnariidae). It occurs or occurred in two disjoint areas in the Brazilian states of Alagoas and Pernambuco . The type epithet honors the Argentine ornithologist Juan Mazar Barnett (1975–2012).

features

The dark-headed leaf scout is similar in its plumage characteristics to the Alagoas leaf scout ( Philydor novaesi ). With a body length of 22 cm and a weight of 48 g, however, it is significantly larger and heavier than the Alagoas leaf scout. The tail length is more than a third of the body length. The skull, forehead and reins are blackish brown. The neck and back are cinnamon brown. The longer and lighter orange-reddish control feathers contrast with the brown rump. The eye stripe is dark. An ocher-brownish line runs over the reins. The beak is larger and stronger at the base and the top of the head is flatter than that of the Alagoas leaf scout. The dark-headed leaf scout differs from the cinnamon-tail leaf scout ( Cichlocolaptes leucophrus ) by the lack of dotted lines on the top and bottom.

Distribution area

The known occurrences are limited to residual forest areas in the regions of Murici in the state of Alagoas and Frei Caneca in the state of Pernambuco.

Habitat and way of life

The dark-headed leaf scout lives in wooded hill country, particularly steep slopes and deep gorges, in which the forests have a higher and less disturbed tree population and the trees are lushly covered with epiphytes, mosses and creepers. The species has been observed in the lower and middle crown areas, where it forages for food between the dead leaves of the bromeliads. Nothing is known about his way of life.

status

The IUCN lists the dark head Blattspäher since 2019 in the category "extinct" ( extinct ). Little evidence of it is known, but it has never been photographed alive. In 1986 he was discovered by Dante Martins Teixeira . The last records were in Frei Caneca in February 2005 and in Murici in April 2007. Subsequent searches in other regions also turned out to be failures. The main threat is illegal deforestation in north-eastern Brazil.

Systematics

In an evaluation in 2016, the members of the South American Classification Committee could not agree to recognize Cichlocolaptes mazarbarnetti as a valid species. They criticized the fact that there is no genetic data that would prove a differentiation from similar species. In contrast, the dark-headed leaf scout is recognized by the IOC checklist, the Clements checklist and the HBW checklist (including IUCN and BirdLife International).

literature

  • Juan Mazar Barnett, Dante Buzzetti: A new species of Cichlocolaptes Reichenbach 1853 (Furnariidae), the 'gritador-do-nordeste', an undescribed trace of the fading bird life of northeastern Brazil. In: Revista Brasileira de Ornitologia. Volume 22, No. 2, 2014, pp. 75-94.
  • Santiago Claramunt : Morphometric insights into the existence of a new species of Cichlocolaptes in northeastern Brazil. In: Revista Brasileira de Ornitologia. Volume 22, No. 2, 2014, pp. 95-101.
  • GA Pereira, SM Dantas, LB Silveira, SA Roda, C. Albano, FA Sonntag, S. Leal, MC Periquito, GB Malacco, AC Lees: Status of the globally threatened forest birds of northeast Brazil. In: Pap. Avuls. Dept. Zool. São Paulo. Volume 54, No. 14, 2014, pp. 177-194.
  • Jochen Martens, Norbert Bahr: Documentation of new bird taxa, 10 - report for 2014. In: Vogelwarte Volume 54, Deutsche Ornithologen-Gesellschaft, 2016, pp. 195–230.
  • Josep del Hoyo , N. Collar: Cryptic Treehunter (Cichlocolaptes mazarbarnetti). In: J. del Hoyo, A. Elliott, J. Sargatal, DA Christie, E. de Juana (Eds.): Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona 2017, accessed April 1, 2017.

Web links

Individual evidence

  1. ↑ Proposal (714) to South American Classification Committee: Recognize Cichlocolaptes mazarbarnetti as a valid species from March 2016