Pomarea is a genus of birds in the monarch flycatcher family Monarchidae. The genus is restricted to the islands of Polynesia. The monarchs of this genus are around 15–19 cm long and most have sexually dimorphic plumage. The genus is highly threatened, with two species listed as critically endangered, two endangered and one vulnerable. Four species have already become extinct. The principal threat to all these species is predation by the introduced black rat. Species: