Description
The Dark Batis is about 10 centimetres in length and weighs 10-15 grams. It has a dark bill and legs and red eyes. The male is white below with a broad black breastband. Above it has a dark grey crown, grey back with some black feather-tips, a black face-mask and black wings with a white stripe. The female has a greyish crown, brownish back, dark mask, slight white supercilium and a narrow rufous stripe on the wing. Below it has a rufous chin-spot and breast with whitish tips to some of the feathers.
The Forest Batis has a slightly shorter tail. Males of the two species are very similar but Forest Batises have a narrower breastband and usually some hint of a white supercilium which is lacking in the male Dark Batis. The females are more distinctive: female Forest Batises have a paler breast and chin with more white tips giving a mottled appearance. There is a conspicuous white supercilium and a broad rufous wing-stripe.
The Dark Batis has a variety of whistling and harsh churring calls and its wings make a whirring sound in flight. The male's song is a series of short, low whistles.
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