 While thought not to be very common, a few animal species are the result of hybridization, mostly insects such as tephritid fruitflies that inhabit "Lonicera" plants and "Heliconius" butterflies, as well as some fish, one marine mammal, the clymene dolphin, and a few birds.One bird is an unnamed form of Darwin's finch from the Galapagos island of Daphne Major, described in 2017 and likely founded in the early 1980s by a male Española cactus finch from Española Island and a female medium ground finch from Daphne Major.Another is the great skua, which has a surprising genetic similarity to the physically very different pomarine skua; most ornithologists now assume it to be a hybrid between the pomarine skua and one of the southern skuas.