Pennant-winged Nightjars
Nightjars
The Pennant-winged Nightjar (Macrodipteryx vexillarius) is an intra African migrant that occurs from Nigeria to northern South Africa.
Their preferred habitat south of the equator is plateau woodlands, especially Miombo, where they are partial to stony or boulder-strewn hillsides. They are observed as bi-annual and social passage migrants along the Kenyan Rift Valley and Lake Victoria regions, and spend the non-breeding season in subtropical savanna from Nigeria to Sudan.
The roost and nest are on bare ground, sometimes among leaf litter. When disturbed they may perch lengthwise on a branch, reminiscent of the similar-sized European Nightjar.
Description
The male is characteristic in having a broad white band over the otherwise black primaries (longest wing feathers). In addition the males acquire a striking 9th primary feather during the breeding season. These pennants grow to greater lengths in successive years, up to twice the body length.
They are dropped or broken off quickly upon completion of breeding.
With the distal (1st) and proximal (7th to 9th) primaries (wing feathers) being longest, the wings of male birds are distinctly angular.
Diet / Feeding
Foraging birds emerge in the late afternoon or directly after sunset for crepuscular (twilight) feeding and are once again active before sunrise. Their diet includes a variety of insects although scarab beetles are favoured. They drink while flying slowly over a water surface.
Breeding / Nesting
Breeding takes place from spring to early summer while south of the equator. Males have separate display territories and attract passing females with an insect-like song. Males furthermore engage in display flights, low through woodland or at great height, wherein they may be joined by receptive females. Egg-laying coincides with the full moon. By mid-summer some birds start returning to the northern hemisphere.
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