Bonnet thread elf

Bonnet thread elf
	Hood thread fairy ♂
Systematics
Class :	Birds (aves)
Order :	Sailor birds (Apodiformes)
Family :	Hummingbirds (Trochilidae)
Tribe :	Coquettes (Lophornitini)
Genre :	Thread Elves ( Discosura )
Type :	Bonnet thread elf
Scientific name
	Discosura popelairii
	( Du Bus , 1846)

The Haubenfadenelfe ( Discosura popelairii ) or Fadenschopfelfe is a species of bird in the family of hummingbirds (Trochilidae), which in parts of the country Colombia , Ecuador and Peru is widespread. The IUCN assesses the population as Near Threatened . The species is considered to be monotypical .

features

Hood thread fairy ♀

The male bonnet thread elf, including the long tail, reaches a body length of about 11.4 cm, the female from 7.5 cm to 8.2 cm, with a weight of about 2.5 g. The male has a short, straight black beak. The glittering green top of the head has thin, hair-like hood feathers. The rest of the top is copper green with a white band across the rump . The ring collar shimmers green, the underside is black. The brownish flanks have white spots. The long forked tail is steel blue, the outer control feathers very thin. The shaft of all control springs is white. The female is similar, but has no hood feathers. The top is black with a white line on the cheek and spots on the side. The tail is noticeably shorter, only slightly forked and bluish black with white spots. Young birds are similar to females. Non-adult males can easily be confused with the butterfly elf ( Lophornis chalybeus ) or the breast ribbon thread elf ( Discosura langsdorffi ), even if these species move at other altitudes, at least in Peru.

Behavior and nutrition

The bonnet thread elf, for example, gets its nectar from blooming Inga trees. It also feeds on small arthropods .

Vocalizations

The singing consists of a calm liquid tuw tone.

Reproduction

Very little is known about their breeding behavior. A nest was discovered in Colombia in April at the end of a branch eight meters above the ground.

distribution and habitat

Distribution area (green) of the hood thread elf

The crested thread elf prefers moist forests and their edges at altitudes between 500 and 1500 meters. A single report from Bolivia mentions their occurrence at an altitude of around 400 meters. Foraging is usually done in the treetops.

migration

The migratory behavior of the bonnet thread elf has not yet been researched. But it is assumed that it is a resident bird .

Etymology and history of research

Hood thread elf illustrated by Georges Severeyns

The bonnet thread elf was first described in 1846 by Bernard Amé Léonard Du Bus de Gisignies under the scientific name Trochilus popelairii . He had received the type specimen from the Belgian explorer Jean Baptiste Louis Joseph Baron Popelaire de Terloo (1810–1870), who had collected the specimen in Peru. The description board was provided by the Belgian artist and lithographer Georges Severeyns . It was not until 1850 that the new genus Discosura was introduced for the discus elves by Charles Lucien Jules Laurent Bonaparte . The species name "popelairii" is dedicated to its discoverer.

literature

Thomas Züchner, Guy Maxwell Kirwan: Wire-crested Thorntail (Discosura popelairii) . In: Josep del Hoyo , Andrew Elliott, Jordi Sargatal , David Andrew Christie , Eduardo de Juana (eds.): Handbook of the Birds of the World Alive . Lynx Edicions, Barcelona ( hbw.com ).
James A. Jobling: Helm Dictionary of Scientific Bird Names . Christopher Helm, London 2010, ISBN 978-1-4081-2501-4 .
Bernard Amé Léonard Du Bus de Gisignies: Esquisses Ornithologiques; descriptions et figures d'oiseaux nouveaux ou peu connus . Delivery 2. A. Vandale, Brussels 1846 ( biodiversitylibrary.org ).
Charles Lucien Jules Laurent Bonaparte: Conspectus generum avium . tape 1 . EJ Brill, Leiden 1850 ( biodiversitylibrary.org ).

Web links

Commons : Crested Thread Elf ( Discosura popelairii ) - Collection of images, videos and audio files

Discosura popelairii inthe IUCN Red List of Threatened Species 2018.2. Listed by: BirdLife International, 2016. Retrieved February 22, 2019.
BirdLife International: Species Factsheet - Wire-crested Thorntail ( Discosura popelairii ) . Retrieved February 22, 2019.
Videos, photos and sound recordings of Wire-crested Thorntail (Discosura popelairii) in the Internet Bird Collection
Bonnet thread elf ( Discosura popelairii ) at Avibase; accessed on February 22, 2019.

Discosura popelairii in the Integrated Taxonomic Information System (ITIS). Retrieved February 22, 2019.

xeno-canto: popelairii sound recordings - bonnet thread elf ( Discosura-popelairii )

Wire-crested Thorntail (Discosura langsdorffi) in the Encyclopedia of Life . Retrieved February 22, 2019.

Individual evidence

^ IOC World Bird List Hummingbirds
↑ ^a ^b ^c ^d ^e ^f Thomas Züchner u. a.
↑ ^a ^b Bernard Amé Léonard Du Bus de Gisignies, plate 6 & text.
^ Charles Lucien Jules Laurent Bonaparte, p. 81.

Remarks

^ Both Trochilus longicaudus Gmelin , 1788 and Ocreatus ligonicaudus Gould , 1846 are synonyms for the discus elf.

[1] IOC World Bird List Hummingbirds

[züchner-2] ↑ ^a ^b ^c ^d ^e ^f Thomas Züchner u. a.

[dubus6-3] Bernard Amé Léonard Du Bus de Gisignies, plate 6 & text.

[bonaparte81-4] Charles Lucien Jules Laurent Bonaparte, p. 81.

[5] Both Trochilus longicaudus Gmelin , 1788 and Ocreatus ligonicaudus Gould , 1846 are synonyms for the discus elf.