The avifauna of Biak Island, Papua, Indonesia with comments on status, conservation, natural history and taxonomy Author Bishop, K. David text Bulletin of the British Ornithologists’ Club 2023 2023-03-06 143 1 3 62 journal article 298463 10.25226/bboc.v143i1.2023.a2 6028cf6b-e944-40d1-b774-7caa1c970409 2513-9894 11642130 805136AB-F3FE-4C77-85AC-E37423156B6D COMMON CICADABIRD Edolisoma tenuirostre # Range E. t. meyerii Biak, Supiori; E. t. numforanum Numfor. Taxonomy Del Hoyo & Collar (2016) treated Biak and Numfor birds as two species. These authors provided an assessment of the expanded Common (aka Slender-billed) Cicadabird E. tenuirostre species complex but stated the ‘situation is one of riddling complexity which molecular research has only partially resolved (and partially added to). New arrangement outline here attempts a plausible and consistent use of available evidence, but perhaps no more satisfactory.’ Nevertheless, the evidence they assembled for treating meyerii as a full species is compelling, however, until the entire group is thoroughly examined, we follow Beehler & Pratt (2016) in retaining the Biak and Numfor taxa as subspecies of E. tenuirostre . Status Biak endemic subspecies. Obtained by five collectors but infrequently reported by visitors. Widespread but rather sparse in tall, well-developed secondary and primary forest. Voice The song is a distinctive series of up to 50 medium-pitched notes, invariably uttered on a near-even pitch. Towards its end the series descends slightly in pitch and decelerates markedly over the last few notes. The quality is slightly nasal, not clear, almost with a buzzy quality (J. Diamond in litt . 1990; Woxvold & Bishop 2020 ).