The Patagonian mockingbird is a small, South American passerine with a sombre plumage of browns, greys and whites (3). The upperparts of its body are greyish-brown, while the flight feathers are blackish with white tips. The crown of its head is brown but a black line runs through each eye and a whitish stripe, formally termed the supercilium, arches over each eye. The throat and belly are buffy-grey and the tail is black (2). In appearance, the Patagonian mockingbird closely resembles the more northerly chalk-browed mockingbird but is best identified by its smaller size, shorter tail, and less prominent supercilium (2) (3).