Clarión Wren

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Clarión Wren
Troglodytes tanneri - Vertebrates on the brink as indicators of biological annihilation and the sixth mass extinction.jpg

Clarión wren ( Troglodytes tanneri )

Systematics
Order : Passerines (Passeriformes)
Subordination : Songbirds (passeri)
Superfamily : Certhioidea
Family : Wrens (Troglodytidae)
Genre : Troglodytes
Type : Clarión Wren
Scientific name
Troglodytes tanneri
Townsend, CH , 1890

The Clariónzaunkönig ( Troglodytes tanneri ) is a bird art from the family of wrens (Troglodytidae) located on the island of Clarion endemic is. The stock is on the IUCN as endangered ( Vulnerable estimated). The species is considered to be monotypical .

features

The Clarión wren reaches a body length of about 12.5 to 14.0 cm. The reins are gray-brown, the eye stripe yellow-brown-white, the ear covers gray-yellow with lighter brown speckles. The top of the head and the neck are matt blackish brown, the back matt gray-brown, the rump reddish brown. The hand and arm wings are striped light and dark on the outer flags. The control feathers have alternating dark brown and gray-brown bands. The throat and chest are yellow-brown-white in color, the rear abdomen and the flanks are more intense yellow-brown. The eyes are dark brown, the beak dark brown with a light horn-brown base. The legs are brownish. Both sexes are similar. Young animals resemble adult birds but are pale brownish scaly on the underside.

Behavior and nutrition

There are no reliable data on the diet and behavior of the Clarión wren.

Vocalizations

The chant of the Clarión wren usually begins with two or more gruff chut tones, continues with a hum that resembles that of the house wren ( Troglodytes aedon Vieillot , 1809). The chatter sounds deeper and rougher than that of the Socorro wren ( Troglodytes sissonii ( Grayson , 1868)). In the post-brood period, it emits long scratching rumble that resembles insects like rattles.

Reproduction

The breeding season of the Clarión wren lasts at least from October to May. It builds its nest in cavities in volcanic rock and sand, as well as in the cavities of anthropogenic tools such as metal or rubber hoses, building houses, boats and vehicles. These are one to three meters above the ground. The nest is goblet-shaped, made of sticks and blades of grass and lined with feathers. The inside diameter is approx. 3 cm and not deeper than 5 cm. One nest contained 4 eggs arranged in an oval. The eggs are approx. 17.7 × 14.0 mm in size, white to pinkish-white with brownish spots on the thicker end. The eggs are only incubated by the female, but both parents feed the nestlings and remove feces and dirt from the nest. Cooperative breeding behavior was also observed. The fledgling young animals stay with their parents for at least ten days. One nest from 1898 was described as an open chalice on the floor; others from 1990 were discovered in the radiator or glove compartment of decommissioned cars.

distribution and habitat

The Clarión wren prefers dry scrub and cactus bushes .

migration

The Clarión wren is considered a resident bird .

Etymology and history of research

The first description of the Clarión wren was in 1890 by Charles Haskins Townsend under the scientific name Troglodytes tanneri . The type specimen was collected by Townsend on the Clarión. As early as 1809, Louis Pierre Vieillot introduced the genus Troglodytes, which was new to science . This name is derived from "trōglē, trōgō κτρωγλη, τρωγω " for "cave, gnaw" and "-dutēs, duō -δυτης, δυω " for "diving, immersing". The species name »tanneri« is dedicated to Zera Luther Tanner (1835–1906), with whom Townsend traveled on numerous trips.

literature

  • Edward Clive Dickinson , Leslie K. Overstreet, Robert Jack Dowsett, Murray Duncan Bruce: Priority! The Dating of Scientific Names in Ornithology . Aves Press Limited, Northampton 2012, ISBN 978-0-9568611-1-5 .
  • James A. Jobling: Helm Dictionary of Scientific Bird Names . Christopher Helm, London 2010, ISBN 978-1-4081-2501-4 .
  • Donald Eugene Kroodsma, David Brewer, Eduardo de Juana in: Josep del Hoyo , Andrew Elliott, Jordi Sargatal , David Andrew Christie , Eduardo de Juana: Clarion Wren (Troglodytes tanneri) in Handbook of the Birds of the World Alive . Lynx Edicions, Barcelona.
  • Charles Haskins Townsend: Scientific results of explorations by the US Fish Commission steamer Albatross. No. XIV..Birds from the coasts of western North America and adjacent islands, collected in 1888-89, with descriptions of new species . In: Proceedings of the United States National Museum. tape 13 , 1890, p. 131-142 ( biodiversitylibrary.org ).
  • Louis Pierre Vieillot: Histoire naturelle des oiseaux de l'Amérique Septentrionale, contenant un grand nombre d'espèces décrites ou figurées pour la première fois . 2 (delivery 18). Chez Desray, Paris 1809 ( biodiversitylibrary.org - 1807-1809).

Individual evidence

  1. ↑ IOC World Bird List Dapple-throats, sugarbirds, fairy-bluebirds, kinglets, hyliotas, wrens, gnatcatchers
  2. ↑ a b c d e f Donald Eugene Kroodsma u. a.
  3. ^ A b Charles Haskins Townsend, p. 133.
  4. ↑ Louis Pierre Vieillot, pp. 52-56.
  5. ↑ James A. Jobling, p. 391.

Web links

Commons : Clarión wren ( Troglodytes tanneri )  - Collection of images, videos and audio files

Remarks

  1. ↑ Vieillot categorized the house wren ( Troglodytes aedon ) and the reed warbler ( Acrocephalus arundinaceus ) in the new genus.
  2. ↑ For the history of the publication see Edward Clive Dickinson u. a. P. 157.