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Brazza's martin (''Phedina brazzae'') is a passerine bird in the swallow family, Hirundinidae. It is 12 cm (4.25 in) long with grey-brown upperparts, heavily black-streaked white underparts, and a brownish tint to the breast plumage. The sexes are similar, but juvenile birds have more diffuse breast streaking and reddish-brown edges to the feathers of the back and wings. The song consists of a series of short notes of increasing frequency, followed by a complex buzz that is sometimes completed by a number of clicks. The range of this species falls within the African countries of Angola, the Republic of the Congo, and the Democratic Republic of the Congo. Nesting in burrows in river banks, it lays a clutch of three white eggs. This bird feeds on flying insects, including termites, and may hunt over rivers or open savanna. It forms mixed flocks with other swallows, but is readily identified by its combination of brown upperparts, streaked underparts and a square tail. Although this little-known bird had been classified as Data Deficient by the International Union for Conservation of Nature (IUCN), it actually appears to be common and widespread, and it has been listed as a species of Least Concern since 2008. There may be some hunting of this martin for food, but the species does not appear to be facing any serious short-term threats. == Taxonomy == The Brazza's martin was first described in 1886 under its current binomial name by French zoologist Émile Oustalet from a specimen obtained at Nganchu in the Ngabé District of what is now the Republic of Congo.〔Turner & Rose (1989) p. 157.〕 The genus name, ''Phedina'', is derived from the Greek ''phaios'' (φαιός) "brown" and the Italian ''rondine'' "swallow".〔Jobling (2010) p. 302.〕 The species name commemorates Italian-born French explorer Pierre Savorgnan de Brazza, later to become governor-general of the French Congo,〔Jobling (2010) p. 76.〕 who collected the type specimen.〔Sharpe & Wyatt (1894) p. (207 ).〕 This species was often called the "Congo martin",〔 but this invites confusion with the Congo sand martin or Congo martin, ''Riparia congica''. The ''Phedina'' species are members of the swallow family of birds, and are classed as members of the Hirundininae subfamily, which comprises all swallows and martins except the very distinctive river martins. DNA sequence studies suggest that there are three major groupings within the Hirundininae, broadly correlating with the type of nest built. These groups are the "core martins", including burrowing species like the sand martin; the "nest-adopters", which are birds like the tree swallow that utilise natural cavities; and the "mud nest builders", such as the barn swallow, which build a nest from mud. The ''Phedina'' species nest in burrows and therefore belong to the "core martins" group. The genus ''Phedina'' is thought to be an early offshoot from the main swallow lineage, although the striped plumage of its two species suggests a distant relationship with several streaked African ''Hirundo'' species.〔Turner & Rose (1989) p. 8.〕〔Turner & Rose (1989) pp. 70–72.〕 The only other member of the genus is the Mascarene martin ''P. borbonica'', although in the past it has sometimes been suggested that Brazza's martin should be moved to its own genus ''Phedinopsis'' due to the significant differences in vocalisations and nest type from its relative.〔 The nearest relative of the ''Phedina'' martins is the banded martin, ''Riparia cincta'', which appears not to be closely related to the other members of its current genus and resembles Brazza's martin in nesting habits and vocalisations.〔〔 The current Association of European Rarities Committees (AERC)-recommended practice is to move the banded martin to its own genus as ''Neophedina cincta'', rather than to merge it into '' Phedina'', since the banded martin's larger size, different bill and nostril shape and non-colonial nesting are differences from the other ''Phedina species''.〔Crochet ''et al.'' (2011) p. 4.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Brazza's martin」の詳細全文を読む スポンサード リンク
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