Very large, dark rainforest owl. Note the dark brown upperparts, heavily barred underparts, and dark eyes. Rare and local in lowland rainforest, including forest edge. The call is a single long, descending whistle: “hrroooooouw,” repeated after long pauses. Shelley’s Eagle-Owl is much larger than other rainforest eagle-owls. Overall coloration most similar to Akun Eagle-Owl, but Shelley’s has dark rather than yellow eyes. Similar in size to Verreaux’s Eagle-Owl, but darker and heavily barred below.