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Wedge-tailed jery

Wedge-tailed jery
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Bernieridae
Genus: Hartertula
Stresemann, 1925
Species:
H. flavoviridis
Binomial name
Hartertula flavoviridis
(Hartert, EJO, 1924)
Synonyms

Neomixis flavoviridis

The wedge-tailed jery (Hartertula flavoviridis) is a small bird endemic to the east of Madagascar. The species has been the cause of some taxonomic confusion, it was originally placed with the jeries in the genus Neomixis (Cisticolidae) before being placed in its own monotypic genus Hartertula, but still considered close to Neomixis. Recent research indicates it is part of an endemic Malagasy radiation currently known as the Malagasy warblers (Cibois et al. 2001).

Description

The wedge-tailed jery is a small, slender warbler-like bird between 12–13 cm long and weighing around 10 g. The plumage is bright yellow before and olive on the crown, wing and back. The eye has a pale white ring and is crossed with a pale supercilium. There is no sexual dimorphism in the plumage of adults, and juvenile birds have similar plumage as well.

Ecology and behaviour

The call, sung repetitively during foraging, is a nasal tsee zeezeezeezeezeezee. In the rainforest they forage in the low understory, gleaning insects from the undersides of leaves and branches, often hanging upside down to do so. They are also accomplished at extracting insects from clumps of leaves and spider web at the ends of branches. They forage in small groups and will also join mixed-species feeding flocks. They nest in small grass nests shaped like balls suspended between 1–2 m above the ground. Little is known about their breeding behaviour but they are known to have clutch sizes of two eggs.

Distribution and habitat

Wedge-tailed jeries inhabit dense stands of rainforest in the east of Madagascar. They are most commonly found in the mid-altitude rainforests between 500–1400 m, and are rarer at lower altitudes and absent above 2300 m.

The wedge-tailed jery is currently listed as near-threatened by the IUCN.[1] The species is confined to mid-altitude rainforest, but this is currently the least threatened forest habitat in Madagascar. There is some danger of habitat loss, and the species is not common anywhere in its range.

References

  1. ^ a b BirdLife International (2016). "Hartertula flavoviridis". IUCN Red List of Threatened Species. 2016: e.T22716161A94483035. doi:10.2305/IUCN.UK.2016-3.RLTS.T22716161A94483035.en. Retrieved 11 November 2021.
  • Cibois, Alice; Slikas, Beth; Schulenberg, Thomas S. & Pasquet, Eric (2001): An endemic radiation of Malagasy songbirds is revealed by mitochondrial DNA sequence data. Evolution 55(6): 1198–1206. DOI:10.1554/0014-3820(2001)055[1198:AEROMS]2.0.CO;2 PDF fulltext
  • Ryan, Peter (2006). Family Cisticolidae (Cisticolas and allies). pp. 378–492 in del Hoyo J., Elliott A. & Christie D.A. (2006) Handbook of the Birds of the World. Volume 11. Old World Flycatchers to Old World Warblers Lynx Edicions, Barcelona ISBN 978-84-96553-06-4
  • BirdLife International (2007) Species factsheet: Neomixis flavoviridis. Downloaded from http://www.birdlife.org on 10/7/2007
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Wedge-tailed jery
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