Clements, J. F., T. S. Schulenberg, M. J. Iliff, B.L. Sullivan, and C. L. Wood. 2010. The Clements checklist of birds of the world: 6.5. bertsioa. Cornell University Press. Downloadable from Cornell Lab of Ornithology[1]
Peterson, A. P. 2010. Birds of the World -- current valid scientific avian names. [2]
