Swallow-tailed Nightjar

The male swallow-tailed nightjar has extremely long outer tail feathers from which the species gets its name; the female's tail is much shorter and less graduated. The male is 66 cm (26 in) long including the tail streamers and weighs about 42 g (1.5 oz). The female is 23 cm (9.1 in) long and weighs about 43 g (1.5 oz). The upperparts of both sexes of the nominate subspecies are dark brown with many tawny spots. The tail is generally brown; the outer tail feathers of both sexes have white shafts and outer webs and the others have tawny bars and spots. Voice: The swallow-tailed nightjar's song has been described as "unmistakable and beautiful ... a vibrating worr-r-r-e-e-e-e-e-r, at first sliding up, then dropping down", and is sung from the ground. It also makes "a liquid, rising pwip, and a musical mellow stuttered whistle when agitated".