Machaerirhynchus nigripectus

Diamond, Jared & Bishop, K. David, 2021, Avifauna of the Adelbert Mountains, New Guinea: why is Fire-maned Bowerbird Sericulus bakeri the mountains’ only endemic bird species?, Bulletin of the British Ornithologists’ Club 141 (1), pp. 75-108 : 96

BLACK-BREASTED BOATBILL Machaerirhynchus nigripectus

Common and calling from 1,225 m upwards, usually alone, occasionally in pairs or in mixed-speciesȱflocks.ȱPreviouslyȱrecordedȱfromȱtheȱAdelbertsȱonlyȱbyȱPrattȱ(1982).