(1820) Pernis apivorus orientalis.
THE SIBERIAN HONEY-BUZZARD.
Pernis orientalis Tacz., Faune. Orn. Sib. Or., i, p, 50, 1891 (Lake Baikal). Pernis cristatus. Blanf. & Oates, iii, p. 406 (part.).
Vernacular names. As in the preceding bird.
Description. Similar to the preceding birds according to age but adults have the tail quite different; the subterminal and median blackish bars are comparatively narrow and separated by a much broader mottled grey band. The subterminal narrow band shows well even in many individuals which are not fully adult.
Colours of soft parts as in the preceding race.
Measurements. Wing 432 to 483, few over 460 mm.; tail 242 to 267 mm.; tarsus 47 to 50 mm.; culmen 33 to 37 mm.
Distribution. Breeding Eastern Siberia from Lake Baikal and the Yenesei. South in Winter to China and Northern India and in Burma as far South as Tenasserim and even into the Malay States.
Nidification. Nothing recorded.
Habits. I can find no information but probably they do not differ from those of the European Honey-buzzard.