1920.] List of the Birds of Siam. 749 



Falco peregrinus calidus Latb. 



Falco calidus Latham, Ind. Orn. i. 1790, p. 41 : India. 



A migratory bird to Siam, where it, liowever, appears to 

 be rather rare. Another race of the Peregrine Falcon {Falco 

 peregrinus peregrinator Sundev.) ahnost certainly migrates to 

 Siam, though no authentic specimens have hitherto been 

 recorded. 



Falco severus severus HorsE. 



Falco secerus Horsfiehl, Trans. Linn. Soc. Lond. xiii. 

 1822, p. 135 : Java. 



Extremely rare in Siam and neighbouring countries. 

 Hitherto only recorded from Bangkok and Koh Lak. 



Cerclmeis tinnunculus saturatus Blvth. 



Tinnunculiis saturatus Blyth, Journ .Asiat. Soc. Bengal, 

 xxviii. 1859, p. 277 : Tenasserim. 



This race is smaller and darker than the typical form of 

 the Kestrel. It breeds in India and China, and has only 

 been found in Siam durino- the winter months. It is not 

 very abundant^ and has hitherto onlv been collected in 

 peninsular, south-western, and central Siam. 



PolioMerax insignis Wald. 



PoUohierax insignis Waldeu, P. Z. S. Lond. 1871, p. 627 : 

 Tonghoo, Burma. 



Specimens of Feilden's Hawk have been collected in 

 northern, south-eastern, and eastern Siam, where it sterns 

 to be widely distributed. It onlv frequents open forests 

 or scrub country, where it is mostly seen perching on dead 

 trees, now and then darting down to catch insects, on which 

 it chiefly feeds. 



Microhierax caerulescens Linn. 



Falco ca'vulescens Linnseus, Syst. Nat. Ed. xii. 1766, 

 p. 125 : India. 



The Bed-legged Falconet is (juite connnon throughout 

 northern and nortli-western Siam, where it is mostly seen in 

 the open dry forests. It has also been obtained al Sakerat 

 iu eastern Siam, though it appears to be more rare in these 

 districts. 



