The Morningbird (Colluricincla tenebrosa) is a species of whistler in the family Pachycephalidae. It is endemic to the islands of Babelthuap, Koror, Garakayo, Peleliu and Ngabad in Palau. The species has sometimes been afforded its own genus, Malacolestes.
Its natural habitat is deep primary tropical moist lowland forests. The species is non-migratory. It is apparently commoner on the smaller islands in its range. The feed principally on insects, but also take snails, berries, fruit, and seeds. They feed on or around the ground.