Vaurie, Charles.Amadon, Dean.2005-10-062005-10-061962http://hdl.handle.net/2246/342211 p. : ill, ; 24 cm.Includes bibliographical references (p. 10-11)."The systematics of the honey buzzards of eastern Asia are discussed. Two races (aside from those of the East Indies) are recognized: Pernis ptilorhyncus orientalis in Japan and northeastern Asia, where it is highly migratory, and, separated from it by a gap, P. p. ruficollis of India, Ceylon, and the Indo-Chinese Peninsula, which is somewhat migratory"--P. 10.en-USQL1 .A436 no.2111, 1962Honey buzzardsBirds -- East AsiaBirds -- South Asiatext