Fülleborn's Longclaw Macronyx fuelleborni Scientific name definitions

20 cm; male 53–64 g, female 46–60 g. Large, distinctive longclaw. Adult male has deep lemon-yellow supercilium, white to buff lores, cinnamon-brown ear-coverts; white or buffish-white line from lores to side of neck, sometimes to breast side; forehead to nape very dark olive-brown to brownish-black with slight scaled appearance, greyish collar; upperparts dark olive-brown to brownish-black, except for greyish back and rump sometimes tinged cinnamon; wings dark olive-brown to brownish-black, fringed bright yellow or yellowish-white to buff or greyish-horn; rectrices dark olive-brown, all except central pair tipped white, white area increasing in size towards outer feather, which has distal third white; chin, throat, malar region and foreneck deep lemon-yellow, bordered by blackish necklace from moustachial region downwards and across upper breast, where broadens in centre; rest of underparts dull lemon-yellow to buff, breast sometimes finely streaked dark; underwing pale olive-brown, axillaries white or yellowish-white; iris dark brown; upper mandible dark horn to black, lower mandible greyish or horn, tipped blackish; legs horn-coloured or brown, tinged yellowish, hind claw long and curved. Distinguished from similar M. croceus by having underparts suffused with buff, no streaking on side of breastband, less pronounced yellow super­cilium, buff-brown flanks and undertail-coverts. Adult female has browner and narrower necklace. Immature is darker and duller above, duller and buffer below, necklace browner and narrower. Race <em>ascensi</em> is slightly larger than nominate, and has duller, less cinnamon rump.

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Editor's Note: Additional distribution information for this taxon can be found in the 'Subspecies' article above. In the future we will develop a range-wide distribution article.

Song “tu-wee-ti-choo wee-ti-choo”; monotonous whistled  “jee-o-wee”, when perched or in flight; other recorded calls include mounrful “peeeu”, metallic “weee” or “wieh wrrit” and chirping “chwee”.