58 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



slopes of Doi Suthep, de Schauensee took a specimen, March 12, 1928, 

 and I saw four, March 20, 1936. I have found it near Ban Pong, a 

 village at the southern foot of Doi Suthep, February 15, 1936 ; in the 

 deciduous jungle near Ban Choeng Doi in March ; and between Ban 

 Choeng Doi and Wiang Pa Pao in April, 1929. During the latter half 

 of August, 1936, I collected six specimens at Mae Mo and there 

 observed many others. Finally, I have often seen this species from 

 the train while passing through the hill-forests between Chiang Mai 

 and Uttaradit. 



There is a strong likelihood that this hawk is migratory. Chasen 

 has remarked (Birds of the Malay Peninsula, vol. 4, 1939, p. 47) that 

 all specimens he has seen from the Peninsula have been collected from 

 November to March. With us, it has so far been recorded only from 

 February to August. The presence of the species on Doi Suthep only 

 in March implies that it has arrived from elsewhere and then moves on. 



The baza is found both in the evergreen and in the deciduous forest, 

 but never at really high elevations. When not breeding, it is usually 

 seen in parties of from 3 to 5 individuals, but sometimes the small 

 groups band together into loose flocks of as many as 20 birds. It is 

 more active at dusk and during the heat of the day perches quietly 

 in the top of a high tree, where it would be overlooked if it did not 

 periodically fly out after passing insects. Sometimes it is very tame, 

 at others exceedingly wild and difficult to approach. When alarmed 

 it utters a soft, tremulous scream and begins to soar in small circles 

 above the treetops. The long crest is held vertically when the bird is 

 at rest. In flight it flaps frequently and looks exactly like a small 

 black and white crow. 



The crest and upperparts are black, the feathers of the back with 

 white bases which show through in places; the scapulars are black 

 and chestnut, with white bases which show as large white patches; 

 the throat is black ; a broad white band across the breast is succeeded 

 by another broad band of mixed black and chestnut ; the sides of the 

 body are buffy, barred with chestnut ; the center of the abdomen and 

 the under tail coverts are black; the wings are black, with a large 

 area of white, mixed with chestnut, near the end of the secondaries; 

 the axillaries are black and the rest of the underwing is gray, darker 

 toward the tip. 



PERNIS PTILORHYNCUS RUFICOLLIS Lesson 



Indian Honey Buzzard 



Pernis ruflcollis Lesson, Traite d'Ornithologie, livr. 1, 1830, p. 77 ("Patrie in- 



connue"=Bengal, fide Kirke Swann). 

 Pernis apivorus ruflcollis [partim], Deignan, Journ. Siani Soc. Nat. Hist. Suppl., 



1936, p. 75 (Chiang Mai). 

 Pernis apivorus orientalis [partim], Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 



1936, p. 75 (Chiang Mai). 



