Also featured are the Eurasian sparrowhawk, goshawk and peregrine falcon. Predators of the yellowhammer include the sparrowhawk, northern goshawk, lesser spotted eagle, and hobby. The falconer's traditional choice of bird is the northern goshawk and peregrine falcon. The Anjouan sparrowhawk is a possibly extinct subspecies of the Frances's goshawk. The red goshawk and rufous owl prey upon the blue-winged kookaburra. It was developed into the supercharged Peregrine and later the Goshawk. The Cooper's hawk is a member of the goshawk genus, "Accipiter". The area is good for rare birds, including black grouse and goshawk. The other greatest predatory threat is certain to be the northern goshawk ("Accipiter gentilis"). Its primary hunting methods recall those of a powerful "Accipiter" such as a goshawk. Firecrests may favour breeding close to northern goshawk nests. Potential predators are also red fox and northern goshawk. The northern goshawk has a large circumpolar distribution. The state bird is the baz (northern goshawk). The northern goshawk is typically considered a perch-hunter.