The yellow-billed blue magpie or gold-billed magpie (Urocissa flavirostris) is a passerine bird in the crow and jay family, Corvidae. It forms a superspecies with the Taiwan blue magpie and the red-billed blue magpie. The species ranges across the northern parts of the Indian Subcontinent including the lower Himalayas, with a disjunct population in Vietnam. Length 66 cm, including tail of about 46 cm. Sexes alike. Head, neck, and breast black, with a white patch on the nape; remainder of lower plumage white, faintly tinged with lilac; whole upper plumage purplish-blue, brighter on the wings and tail; flight-feathers tipped with white, the outermost edged with the same; tail long and graduated, the feathers blue, broadly tipped with white, all except the very long central pair having a band of black in front of the white