Feline Owlet-nightjar vs Wallace's Owlet-nightjar

Cat-like mewing 'meeow' calls; high, eerie shrieks; cat-like quality unique among nightjars; calls from New Guinea highland forest at night; alarm a hissing screech

Soft churring trill; 'churr' from New Guinea lowland forest; moderate pitch; calls at night from hollow tree roost sites; alarm a rapid staccato chatter

Large; rufous-brown upperparts with dark brown barring; underparts pale buff with dark brown barring throughout; facial disc bordered dark; two colour morphs—rufous and grey-brown; largest owlet-nightjar with somewhat cat-like facial …

Grey-brown upperparts with dark brown barring and pale buff freckling; underparts pale buff barred brown; facial disc with dark border; Papuan species showing typical owlet-nightjar coloration with moderately contrasting barring.