64 GYLDENSTOLPE. BIRDS COLLKCTED BY THE SWKDISH ZOOLOGICAL EXPEDITION TO SIAM. 



appeared as from the bowels of the earth, often more than a dozen at a tinie, and 

 yet I could vvalk through the same forests for days without seeing a single Shikra. 



$ 172 1912 Pak Pan. $ 17. 1912 Pak Pan. 



Length = 350 mm. Length=340 mm. 



Wing =222 » Wing =207 » 



Tail =175 » Tail = 167 » 



Tris = yellow. 



145. Falco peregrinus Tunst. — The Peregrine Falcon which is of almost 

 world-wide occurrence and has been found several times during the winter in India, 

 Ceylon and Burma was also noticed, biit only in a single specimen, where the rail- 

 way line passes the swamps at Tha Law. In the middle of the swampy coimtry 

 the train passes through a small bamboo jungle, which was a splendid resting place 

 for all sorts of birds of prey as well as for the Herons, Adjutants and Storks, which 

 came here to spend the nights. I often went to this place and one day I observed 

 a Peregrine Falcon here, but I was unsuccessful in my efforts to get it. A mistake 

 in the determination of the species is, howev^er, scarcely imaginable, because I got a 

 very good view of the bird through my glasses before it went away for good. 



146. Microhierax eutolmus Blyth. — The Red-legged Falconet was found 

 över the whole country, except in the primeval evergreen forests. It was, however, 

 very common in the dry forests, for instance round Den Chai and Pak Pan and was 

 found, though more sparingly, on the Korat plateau too. The bird, which is a big 

 as a lark, is very rapacious and I once saw it attack and kill an Oriole which is 

 bigger than the Falconet itself. 



$ »Vi 1912 Den Chai. J 7-2 1912 Den Chai. $ ^-'l^ 1912 Den Chai. 



Length = 165 mm. Length--155 mm. Length = 170 mm. 



Wing =103 » Wing = 95 » Wing =102 » 



Tail - 66 » Tail = 62 » Tail = 66 ^ 



147. Poliohierax insignis Wald. — This species does not seem to be found 

 further to the west than to the Menam Chao Phaya valley. On the Korat plateau 

 it was rather common, and I observed it several times during my stay at the villages 

 of Sakerat and Non Luum. Blanford (Fauna of British India. Birds III, p. 436) 

 mentions this bird as occurring in western Siam and it then was very curious that 

 I quite failed to observe it during my stay in some of the western provinces if bis 

 statement is accurate. 



$ 171 1912 Non Luum. 



Length = 265 mm. 



Wing = 144,5 ^ 



Tail =139,5 > 



Culmen from cere = 13 mm. 



Iris = brown. 



