Lendusylvietta

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Lendusylvietta
Systematics
Order : Passerines (Passeriformes)
Subordination : Songbirds (passeri)
Superfamily : Sylvioidea
Family : Macrosphenidae
Genre : Sylviettas ( Sylvietta )
Type : Lendusylvietta
Scientific name
Sylvietta Chapini
Schouteden , 1947

The Lendusylvietta ( Sylvietta chapini ) is a hardly researched bird species of the genus Sylviettas ( Sylvietta ) from the family Macrosphenidae . It is only known from three specimens collected in 1941 and 1942 by the Belgian entomologist Jean Marie Vrydagh (1905–1962) in the forests of Nioka and Djugu on the Lendu Plateau in Belgian Congo (now the Democratic Republic of the Congo ). The art epithet honors the American ornithologist James Paul Chapin .

features

The body length is 9 cm. In the adult bird, the top of the head, the sides of the head and the neck are lively chestnut brown. The coat is black-brownish. The rest of the top is olive green. The flight feathers are brown with striking light yellowish-green fringes. The chin, throat, and the midline of the abdomen are white. The rest of the underside is brown-gray. The under wing coverts, the under tail coverts and the thighs are lemon yellow. The under tail is brown. The beak is gray-pink or flesh-colored, darker or brownish on the underside. The iris is light brown or chestnut in color. The legs are gray-pink to flesh-colored. Compared to the closely related white- browed Sylvietta ( Sylvietta leucophrys ), the maroon color of the skull extends to the face, the eye stripe is missing in the Lendusylvietta and the belly is yellowish-brown-gray. The young birds are undescribed.

Habitat and way of life

According to Jean Marie Vrydagh, the Lendusylvietta was still often found in the gallery forests of the Lendu Plateau in 1942. It lives in the thick undergrowth and feeds on insects. No more is known about their way of life.

status

The Lendusylvietta was included in the IUCN Red List for the first time in 1988 in the category “not endangered” ( least concern ). In 2006 it was classified as a subspecies of the white- browed Sylvietta ( Sylvietta leucophrys ) by Lincoln DC Fishpool and Nigel Collar . It was then removed from the IUCN Red List in 2007. In 2016 it was again raised to the status of species and classified by the IUCN in the category “ critically endangered ” . The inventory is estimated to be less than 50 copies. The authors Julian Pender Hume and Michael Walters, however, suspect that this species may already have become extinct, as it has not been seen since 1942 and its habitat has been almost completely deforested. In 1993 and 1994 ornithologist Tommy Pedersen went on a search expedition for the Lendusylvietta. When flying over the Lendu plateau, he found that there were only about 20 hectares of forest. He was unable to rediscover the Lendusylvietta, but he was able to rediscover another species of bird that was believed to be lost, the Prigoginebülbül ( Chlorocichla prigoginei ) in 1994.

literature

  • Henri Schouteden: Un nouveau Sylvietta de la faune congolaise (Aves, Sylviidae). Revue de Zoologie et de Botanique Africaines 40, 1947: pp 193–194.
  • Lincoln DC Fishpool & Nigel Collar: The taxonomic and conservation status of Chapin's Crombec Sylvietta (leucophrys) chapini In: Bulletin of the African Bird Club Vol 13, No 1, 2006. pp. 17-22
  • Julian Pender Hume, Michael P. Walters : Extinct Birds. A & C Black, London 2012. p. 254. ISBN 140815725X .
  • Josep del Hoyo , Nigel Collar, David A. Christie, Andrew Elliott, Lincoln DC Fishpool, Guy M. Kirwan and Peter Boesman: HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: (Passerines). Lynx Edicions, Barcelona 2016, ISBN 978-84-96553-98-9 .

Individual evidence

  1. ^ A b Josep del Hoyo, Nigel Collar, David A. Christie, Andrew Elliott, Lincoln DC Fishpool, Guy M. Kirwan and Peter Boesman: HBW and BirdLife International Illustrated Checklist of the Birds of the World Volume 2 (Passerines) . Lynx Edicions, Barcelona, ​​2016. ISBN 978-84-96553-98-9
  2. ↑ Bo Beolens, Michael Watkins: Whose Bird? Men and Women Commemorated in the Common Names of Birds. Christopher Helm, London, 2003. p. 81.
  3. ↑ JM Vrydagh: Observations ornithologiques en région occidentale du Lac Albert et principalement de la plaine d'Ishwa. Roughed 39: 1–115.
  4. ↑ Lincoln DC Fishpool & Nigel Collar: The taxonomic and conservation status of Chapin's Crombec Sylvietta (leucophrys) chapini In: Bulletin of the African Bird Club Vol 13, No 1, 2006. pp. 17-22
  5. ^ Sylvietta chapini in the IUCN Red List of Threatened Species 2016.3. Posted by: BirdLife International, 2016. Retrieved January 23, 2017.
  6. ^ Julian Pender Hume, Michael Walters: Extinct Birds. A & C Black, London 2012. p. 254. ISBN 140815725X .
  7. ^ Michel Louette: Additions and corrections to the avifauna of Zaire (4). Bull. Brit. Orn. Club 109, 1989: pp 217-225.
  8. ↑ Tommy Pedersen: New observations of a Zaïrean endemic: Prigogine's Greenbul Chlorocichla prigoginei. Bulletin of the African Bird Club 4, 1997: p. 109-110.