BioAcoustica is a free, open repository of wildlife sound recordings from the Natural History Museum, London.
Taxonomic index of the BioAcoustica collection
Acoustic and biological measurements in the BioAcoustica collection
Recording annotations from ann-o-mate
The specimens that recordings are of, from the collections
Where the specimens that recordings are of were collected, not where the sound was recorded
Tinkham (1944) confused this species with N. ovata and his remarks for that species apply here. He described the song of this species as "a strong zip-zip broken by a pause of several seconds and quite distinct from the zic-zic-zic of segnis" (here considered N. o. gigantea). Tinkham also stated the call could be heard for a distance of about 100 feet.