THE BIRDS OF NORTHERN THAILAND 175 



finely and indistinctly vermiculated light and dark and most of them 

 have indistinct, dark shaft streaks. The tarsi are feathered to the 

 base of the toes; the third and fourth primaries are longest and the 

 first falls between the sixth and the eighth in length. 



The two northern birds are in the gray phase of plumage. They 

 have been discussed by Friedmann and Deignan, Journ. Washington 

 Acad. Sci., vol. 29, 1939, p. 288, and by Delacour, Zoologica, vol. 26, 

 No. 17, 1941, p. 137. 



OTUS ASIO CONDORENSIS Boden Kloss 



Indo-Chinese Collared Scops Owl 



Otus bakkamoena condorensis Boden Kloss, Journ. Siam Soc. Nat. Hist. Suppl., 



vol. 8, No. 2, 1930, pp. 81-82 (Pulau Kondor, about 45 miles off the coast of 



Cochiu-China). 

 Scops lempiji, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1913, p. 61 



(Den Chai). 

 Scops baccamoena lempiji, Gyldenstolpe, Journ. Nat. Hist. Soc. Siam, 1915, 



p. 233 (listed). 

 Otus bakkamoena lettia, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1916, 



p. 120 (Pha Kho, Tha Chomphu, Khun Tan). — de Schauensee, Proc. Acad. 



Nat. Sci. Philadelphia, 1934, p. 268 (Chiang Mai). — Deignan, Journ. Siam 



Soc. Nat. Hist. Suppl., 1936, p. 89 (Chiang Mai).— Riley, U. S. Nat. Mus. 



Bull. 172, 1938, p. 147 (Mae Khan, Khun Tan). 

 Scops bakkamoena lettia, Gyldenstolpe, Ibis, 1920, p. 752 (Den Chai, Pha Kho, 



Tha Chomphu, Khun Tan). 

 Otus sunia modestus [partim], Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 



1931, p. 164 (Chiang Mai [partim]). 

 Otus sunia modestus, Greenway, Bull. Mus. Comp. Zool., 1940, p. 193 (Chiang 



Mai). 



The collared scops owl is the only member of its genus that is com- 

 mon in our provinces. It occurs both in the lowlands and on the 

 mountains: I have taken it at Chiang Mai, at Muang Chiang Dao, 

 and on Doi Chiang Dao and have heard it calling at night on many 

 of the higher hills. 



At Chiang Mai its soft double hoot was a familiar nocturnal sound 

 in the gardens of the town at any season, and the bird could easily 

 be observed by flashing the beam of an electric torch into the tree 

 whence the notes came. Despite its obvious commonness, I never once 

 saw an individual in daylight and failed to discover where it roosted. 



In the vicinity of Chiang Mai, de Schauensee took a specimen with 

 an oviduct egg, February 2, and I collected a male with greatly en- 

 larged testes, February 3. Other examples with the gonads enlarged 

 were obtained there February 22 and May 7. In Stockholm are a 

 juvenile from Chiang Mai, April 11 (Fejos), and another from 

 Khun Tan, April 30 (Gyldenstolpe) . The juvenile taken at Chiang 

 Mai, April 29, and recorded by Greenway as O. s. modestus has been 

 examined and proves to be of this species. 



