Within the lush rainforests of Southeast Asia lies a captivating avian wonder known as the King Bird-of-Paradise (Cicinnurus regius). As a remarkable member of the Paradisaeidae family, this species holds a unique position, being the sole representative of the genus Cicinnurus, with the subgenus Diphyllodes now consolidated under it. In this exploration, we delve into the enchanting appearance, distribution, habits, and breeding behaviors of this resplendent bird, which has earned the well-deserved moniker of the “living gem.”