MacrosphenusMacrosphenus is a genus of African warblers, formerly placed in the family Sylviidae. It is one of two genera in that family known as longbills.Taxonomy and systematicsExtant speciesThe genus contains five species: Yellow longbill Kemp's longbill Grey longbill Pulitzer's longbill Kretschmer's longbillFormer speciesSome authorities, either presently or formerly, recognize several additional species as belonging to the genus Macrosphenus including: Montane tiny greenbul