The Blue Coua (Coua caerulea) is a species of bird in the cuckoofamily. It is endemic to Madagascar. The bird is a deep blue with a bare blue oval around the eye and beak. It averages a size of 48–50 cm in length and 225–268 g in weight, with females slightly lager. The birds can be found in the north-western and eastern areas of Madagascar. Its natural habitats are subtropical or tropical dry forests, subtropical or tropical moist lowland forests, subtropical or tropical mangrove forests, and subtropical or tropical moist montane forests. The bird lays only one egg in a nest hidden in trees and bushes. The diet consists of insects, varied fruits, and small reptiles. This bird is on the red list of threatened species because of hunting.