It often includes the Sumatran Leafbird (C. media) from Sumatra as a subspecies, but the two differ extensively in, among others, morphology.
Sumatran Trogon | Sumatran Tiger | Sumatran tiger | Jerdon's Leafbird | Bornean Leafbird | Sumatran orangutan | Sumatran Leafbird | Sumatran elephant | Golden-fronted Leafbird | Blue-winged Leafbird |