Margarops fuscus The scaly-breasted thrasher (Allenia fusca) is a species of bird in the family Mimidae.

Adults of the nominate subspecies have a dark gray-brown head and upperparts with a reddish tinge on the rump.

Their tail is a darker brownish black and its outer feathers have white tips.

The underparts are whitish and the chest and flanks have bold gray-brown markings that give the eponymous scaly appearance.

The scaly-breasted thrasher's song is a "[s]eries of varied notes and phrases" similar to that of Mimus mockingbirds but softer and slower.