Published as part of Pedroza, Diego, Melo, Tomaz Nascimento de, Machado, Tatiana Lemos da Silva, Guimarães, David Pedroza, Lima, Jônatas M. & Guilherme, Edson, 2020, Birds of Humaitá Forest Reserve, Acre, Brazil: an important forest fragment in south-west Amazonia, pp. 58-79 in Bulletin of the British Ornithologists' Club 140 (1) on page 61, DOI: 10.25226/bboc.v140i1.2020.a7, http://zenodo.org/record/12535635

ASH-COLOURED CUCKOO Micrococcyx cinereus Austral migrant. Guilherme (2009) first reported the species in HFR. A female, collected on 20 July 2007, is deposited in Belém (MPEG 63485). The date of this record corresponds to the coldest part of the austral winter in southern Brazil, where the species breeds (Payne 2019a).