A brightly colored bird of lowland and foothill forests. Usually travels in large groups, and is often a chief component of mixed-species feeding flocks. Adult is a powdery gray-blue overall with blue highlights on the wings and tail. The face and sides are tinged soft gray-brown. Varies considerably over range; birds in southern Southeast Asian portion of range are very gray, lacking bright colors. Sexes alike. Acrobatic, often hanging upside down on branches to probe for invertebrates and fruit hidden by foliage. Listen for its high-pitched paired whistles: “dwweeee-deeee.”