Pale Batis
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The pale batis (''Batis soror''), also known as the Mozambique batis or East coast batis is a species of small
bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweigh ...
in the
wattle-eye Platysteiridae is a family of small, stout passerine birds of the African tropics. The family contains the wattle-eyes, batises and shrike-flycatchers. They were previously classed as a subfamily of the Old World flycatchers, Muscicapidae. These ...
s family,
Platysteiridae Platysteiridae is a family of small, stout passerine birds of the African tropics. The family contains the wattle-eyes, batises and shrike-flycatchers. They were previously classed as a subfamily of the Old World flycatchers, Muscicapidae. These ...
. It occurs in eastern Africa, mostly in lowland
miombo The Miombo woodland is a tropical and subtropical grasslands, savannas, and shrublands biome (in the World Wide Fund for Nature scheme) located primarily in Central Africa. It includes four woodland savanna ecoregions (listed below) characterized b ...
woodland.


Description

The pale batis is an active, black, white and grey bird which is pale grey above with a black face mask bordered by a thin white
supercilium The supercilium is a plumage feature found on the heads of some bird species. It is a stripe which runs from the base of the bird's beak above its eye, finishing somewhere towards the rear of the bird's head.Dunn and Alderfer (2006), p. 10 Also ...
, yellow eye and a pale grey back, mottled with faint white spots. It has white underparts marked with a black band across the breast in males; females have a pale rufous breast band and a similar coloured spot on the chin. The bill and legs are black. Immature birds are similar to the female except that the breast band is browner and the underparts have a buffy wash. The pale batis measures in length and weighs .


Voice

The territorial call of the pale batis is a repeated, mournful, long and piping 3-note “pook pook pook” which is repeated up to 12 times at a constant rate, with which the female duets giving excited "wik-wik" calls. Otherwise the repertoire consists of typical batis bill snaps, churrs and whistles.


Distribution

Eastern Africa from coastal
Kenya ) , national_anthem = "Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi , ...
including the
Arabuko Sokoke National Park The Arabuko Sokoke Forest Reserve is located on the coast of Kenya, 110 km north of Mombasa and is protected as a national Forest Reserve. The Arabuko Sokoke National Park, situated at the north-western edge of the Arabuko Sokoke Forest Reserv ...
south through eastern and south-eastern
Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands and ...
, the islands of
Zanzibar Zanzibar (; ; ) is an insular semi-autonomous province which united with Tanganyika in 1964 to form the United Republic of Tanzania. It is an archipelago in the Indian Ocean, off the coast of the mainland, and consists of many small islands ...
and
Mafia "Mafia" is an informal term that is used to describe criminal organizations that bear a strong similarity to the original “Mafia”, the Sicilian Mafia and Italian Mafia. The central activity of such an organization would be the arbitration of d ...
, to
Mozambique Mozambique (), officially the Republic of Mozambique ( pt, Moçambique or , ; ny, Mozambiki; sw, Msumbiji; ts, Muzambhiki), is a country located in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi ...
as far south as the Save River, inland to south eastern Malawi, and the east-facing slopes of the
Eastern Highlands :''"Eastern Highlands" also refers to Eastern Highlands Province in Papua New Guinea, and part of the Great Dividing Range, Australia.'' The Eastern Highlands, also known as the Manica Highlands, is a mountain range on the border of Zimbabwe ...
of
Zimbabwe Zimbabwe (), officially the Republic of Zimbabwe, is a landlocked country located in Southeast Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa to the south, Botswana to the south-west, Zambia to the north, and Mozam ...
.


Habitat

The pale batis typically occurs in lowland
miombo The Miombo woodland is a tropical and subtropical grasslands, savannas, and shrublands biome (in the World Wide Fund for Nature scheme) located primarily in Central Africa. It includes four woodland savanna ecoregions (listed below) characterized b ...
woodland, normally below in coastal woodlands where there is a mosaic of forest and dense scrub. Can also be found in
mopane ''Colophospermum mopane'', commonly called mopane, mopani, balsam tree, butterfly tree, or turpentine tree, is a tree in the legume family (Fabaceae), that grows in hot, dry, low-lying areas, in elevation, in the far northern parts of southern A ...
and
acacia ''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus na ...
around the edges of its distribution. In the Eastern Highlands of Zimbabwe it is found up to above sea level in tall ''
Uapaca kirkiana ''Uapaca kirkiana'', the sugar plum or mahobohobo, is a species of dioecious plant in the family Phyllanthaceae. It is native to the southern Afrotropics, where it occurs in well-watered miombo woodlands. Within range it is one of the most popu ...
'' stands, thickets of '' Philippia'' spp. and woodland dominated mountain acacia.


Habits

Little is known about the feeding habits of the pale batis, other than that it forages by gleaning insects from leaves and branches, it occasionally gleans while hovering and it often joins mixed foraging parties. Its social behaviour is probably similar to other batises in that it is not normally seen in groups larger than pairs or family groups, although the males may gather in single sex aggregations known as "parliaments" immediately prior to the breeding season, when they fly about excitedly, snapping their bills, fripping their wings and making "wik" calls. The male has a zigzag courtship display flight which he performs along with wing fripping, tail fanning and fluffing up the long, white spotted rump feathers while giving strident "week-week-week" calls. The females joins in the calls with her own excited "wik-wik" call. The nest of the pale batis is a small, deep cup built of thin strips of ''
Combretum ''Combretum'', the bushwillows or combretums, make up the type genus of the family Combretaceae. The genus comprises about 272 species of trees and shrubs, most of which are native to tropical and southern Africa, about 5 to Madagascar, but ther ...
'' bark and fragments of grass
inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...
s, held together with spiders webs. The nest is normally situated in the fork of a branch which is at least above the ground, a small clutch of about 1–2 eggs is usually laid during the period September–November. The female is responsible for all of the incubation and initially she carries out all the feeding of the young, the male joins in feeding when the chicks are older. Only the immediate vicinity of the nest is defended.


References


External links

* Pale batis
Species text in The Atlas of Southern African Birds
{{Taxonbar, from=Q1317337 pale batis Birds of Southern Africa pale batis Taxonomy articles created by Polbot