Macrosphenus concolor
The Grey Longbill (Macrosphenus concolor) is a distinctive, albeit often elusive, passerine belonging to the African warbler family Macrosphenidae. Measuring approximately 13-15 cm in length and weighing around 12-18 grams, it is characterized by its uniformly dull grey plumage, which is darker on the upperparts and paler below, offering excellent camouflage within its dense forest habitat. Its most striking and diagnostic field mark is its unusually long, slender, and slightly decurved black...
This species primarily inhabits the dense undergrowth of lowland evergreen forests, including secondary growth, riparian fringes, and swampy forest edges, typically at elevations up to 1,600 meters.
The diet of the Grey Longbill consists predominantly of insects and other small invertebrates, which it gleans from foliage and probes from bark and crevices using its specialized long bill.
Grey Longbills are highly secretive and skulking birds, spending most of their time hidden within dense vegetation, making them challenging to observe. They are diurnal, actively foraging during daylight hours, often singly or in pairs, rarely joining mixed-species flocks. Their foraging strategy...
The Grey Longbill has a widespread yet somewhat disjunct distribution across West and Central Africa. Its range extends from Sierra Leone eastward through Liberia, Côte d'Ivoire, and Ghana. Another significant population occurs from southeastern Nigeria, eastward through Cameroon, Equatorial Guin...
Least Concern
- The Grey Longbill's scientific name 'Macrosphenus concolor' literally translates to 'long wedge of uniform color,' aptly describing its bill and plumage. - It is often referred to as a 'ghost bird' by birders due to its exceptionally secretive nature and difficulty in observation in its dense h...