>Xanthomixis zosterops (Spectacled Tetraka)

Spectacled Tetraka

Spectacled Tetraka
Conservation status
Least Concern (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Bernieridae
Genus:	Xanthomixis
Species:	X. zosterops
Binomial name
Xanthomixis zosterops Sharpe, 1875

The Spectacled Tetraka (Xanthomixis zosterops) is a species of Malagasy warbler in the Bernieridae family. It is found only in Madagascar. Its natural habitat is subtropical or tropical moist lowland forests.

>Xanthomixis tenebrosa (Dusky Tetraka)

Dusky Tetraka

 

Dusky Tetraka
Conservation status
Vulnerable (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Bernieridae
Genus:	Xanthomixis
Species:	X. tenebrosa
Binomial name
Xanthomixis tenebrosa Stresemann, 1925
Synonyms
Phyllastrephus tenebrosus(Stresemann, 1925)

The Dusky Tetraka (Xanthomixis tenebrosa) is a species of Old World warbler in the Bernieridae family. It is found only in Madagascar. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.

>Xanthomixis cinereiceps (Grey-crowned Tetraka)

Grey-crowned Tetraka

 

Grey-crowned Tetraka
Conservation status
Near Threatened (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Bernieridae
Genus:	Bernieria
Species:	B. cinereiceps
Binomial name
Bernieria cinereiceps Sharpe, 1881
Synonyms
Phyllastrephus cinereiceps (Sharpe, 1881)

The Grey-crowned Tetraka or Grey-crowned Greenbul (Bernieria cinereiceps) is a species of Malagasy warblerin the family Bernieridae. It is found only in eastern and northern Madagascar. Its natural habitat is subtropical or tropical moist montane forests. It is threatened by habitat loss.

>Xanthomixis apperti (Appert's Tetraka)

Appert's Tetraka

Appert's Tetraka
Conservation status
Vulnerable (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Bernieridae
Genus:	Xanthomixis
Species:	X. apperti
Binomial name
Xanthomixis apperti (Colston, 1972)
Synonyms
Phyllastrephus apperti Bernieria apperti

Appert's Tetraka or Appert's Greenbul (Xanthomixis apperti) is a small passerine bird endemic to the south-west of Madagascar. The species was only described in 1972, and has been the subject of considerable taxonomic confusion. It was initially placed in the greenbul genus Phyllastrephus, and later with the Old World warblers in the genus Bernieria. Recent research indicates it is part of an endemic Malagasy radiation currently known as the Malagasy warblers (Cibois et al. 2001).

The Appert's Tetraka is around 15 cm long with a pink bill and grey legs. The plumage of the sexes is similar; the back, tail and wings are green (the wings being a darker shade), the head grey and the throat white. The flanks and belly are washed orange and the undersides are white. The species is highly terrestrial, feeding in undisturbed forest in shrubs near the ground and on the ground. Family groups of up to 8 birds, sometimes in association with other species, forage on insects gleaned from under leaves and branches.

The Appert's Tetraka is currently restricted to two known locations in south-west Madagascar. One is the dry deciduous forest at Zombitse-Vohibasia National Park (where the species was first discovered) and a second population in montane evergreen forest at Analavelona Classified Forest. The species is considered vulnerable due to its restricted range, particularly to habitat loss due to forest clearance. At present the Zombitse-Vohibasia forest is the subject of conservation projects that have stopped deforestation, and the Analavelona Classified Forest, while not protected, is remote and not under immediate threat.

>>Genus Xanthomixis

Xanthomixis

Xanthomixis
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Bernieridae
Genus:	Xanthomixis Sharpe, 1881

Xanthomixis is a genus of birds in the Malagasy warbler family Bernieridae. It contains the tetrakas.

Species

• Appert's Tetraka, Xanthomixis apperti
• Grey-crowned Tetraka, Xanthomixis cinereiceps
• Dusky Tetraka, Xanthomixis tenebrosa
• Spectacled Tetraka, Xanthomixis zosterops