Nocturnal singing in a temperate bird community

We quantified nocturnal vocal behaviour in a North American temperate mixed-forest community using automated recording. We recorded for 2-4 nights at 32 locations and identified 18 species singing at dawn or dusk. Of those 18 species, only two sang at night (White-throated Sparrow, Zonotrichia albicollis, and Ovenbird, Seiurus aurocapilla). We show that automated recording is a useful tool for studying nocturnal vocalisations.