Numfoor I, in Geelvink Bay (north-western New Guinea). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Numfor Leaf Warbler (Phylloscopus maforensis) [XC395312]
by id from Numfor island Indonesia, Indonesia (song)
Numfor Leaf Warbler (Phylloscopus maforensis) [XC256244]
by JACOB Herv\u00e9 from Bruyadori, Biak Numfor Regency, Papua, Indonesia (call)
Subspecies
Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
The following 19 subspecies are recognised:
henrietta Stresemann, 1931 - Northern Moluccas (Halmahera, Ternate). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
waterstradti (Hartert, 1903) - Northern Moluccas (Bacan, Obi). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
everetti (Hartert, 1899) - Southern Moluccas (Buru, above 700 m). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
ceramensis (Ogilvie-Grant, 1910) - Southern Moluccas (Seram, Ambon). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
avicola Hartert, 1924 - Kai Is (Kai Besar). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
matthiae Rothschild & Hartert, 1924 - St Matthias Group (Mussau I), in Bismarck Archipelago. Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
moorhousei Gilliard & LeCroy, 1967 - New Britain and Umboi, in Bismarck Archipelago. Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
leletensis Salomonsen, 1965 - New Ireland, in Bismarck Archipelago. Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
maforensis Meyer, 1874 - Numfoor I, in Geelvink Bay (north-western New Guinea). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
misoriensis Meise, 1931 - Biak I, in Geelvink Bay. Considered by some authors to be a distinct species, Biak Leaf-Warbler (Phylloscopus misoriensis).
poliocephalus (Salvadori, 1876) - North-western New Guinea (Tamrau Mts, Arfak Mts, Wandammen Mts). Considered by some authors to be a distinct species, Island Leaf-Warbler (Phylloscopus poliocephalus).
albigularis Hartert & Paludan, 1936 - West-central New Guinea (Weyland Mts). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
cyclopum Hartert, 1930 - Northern New Guinea (Cyclops Mts). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
giulianettii (Salvadori, 1896) - Central and south-eastern New Guinea (eastern from Snow Mts). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
hamlini Mayr & Rand, 1935 - Goodenough I, in D'Entrecasteaux Archipelago (off south-eastern New Guinea). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
becki Hartert, 1929 - Eastern Solomon Is (Santa Isabel, Guadalcanal, Malaita). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
bougainvillei Mayr, 1935 - Bougainville I. Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
pallescens Mayr, 1935 - Kolombangara I, in western Solomon Is. Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).
paniaiae Junge, 1952 - West-central New Guinea (Wissel Lakes region). Considered by some authors to be a subspecies of Island Leaf-Warbler (Phylloscopus poliocephalus).