KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 56. MO 2. L23 



lam. Pandionidae. 



247. Pandion haliaétus cristatus. Vieill. The Osprey. 



Pandion haliaétus: Gyldenstolpe I p. 62: Robinson & Kloss p. 29; Gairdner p. 150. 



<$ Koli Lak 2 / I2 1914. L — 500 mm.; W 170 mm.; T = 218 mm.; C — 32 mm. -- J Kol. 

 Lak 17 /i2 1914. L = 530 mm.; W = 461 mm.; T = 224 mm.; C ■■ = 31 mm. - Irides: påle yellow. Bill: 

 black (cere = påle blue). Legs: påle bluisli grey. 



During my stav in the Siamese Malaya I shol two Eine specimens of the eastern 

 race of our common Osprey. One of these specimens, both of wliicli wcre obtained at 

 Koh Lak, is a young bird with thc crown rather dark-striped; the other one seems to be 

 older and has the crown almost white with only a few blackish-brown stripes. 



248. Polioaétus ichtyaétus. Horsf. - The Large Grey-headed Fishing-Eagle. 



Polioaétus ichthyaétus: Oustalet 1899 p. 231; Robinson & Kloss p. 30; Grant p. 113; Bonliote p. 58; Robinson 

 II p. 144; Gairdner p. 150. 



ef Nong Meb Lua 6 , s 1914. L = 662 mm.; W = 461 mm.; T = 280 mm.; Culmen = 37,5 mm. - 

 Irides: yellowisb white. Bill: horn coloured (base plumbeous). Legs: whitish grey. 



The Large Grey-headed Fishing-Eagle inhabits such well-wooded träets where large 

 rivers and swamps abound. I fonnd it fairly common on such localities in Northern and 

 Central Siarn. It is a very elumsy bird which ne ver takes long flights. 



A fine male specimen was obtained at Nong Meh Lua in Upper Siarn on the 6th of 

 August 1914. 



This specimen differs from the deseriptions in the literature, in not havhig 

 t lie head and neck pure grey. The crown and upper neck is, however, grey but 

 distinctly washed with brown; the chin, upper throat and sides of the head are pure grey 

 without any brownish tinge. The whole upper plumage, breast and upper abdomen brown, 

 the two last-mentioned parts, however, decidedly paler. 



Fam. Falconidae. 



249. Circus melanoleucus. Först. — The Pied Harrier. 



Circus melanoleucus: Williamson I p. 47; Gyldenstolpe Hl p. 234. 



c? Koon Tan 1914. W = 346 mm.; T = 215 mm.; C = 16 mm. — $ Koon Tan 1914. W = 332 

 mm.; T = 213 mm.; C = 16 mm. 



The Pied Harrier is only to be found in Siarn during the cold season, but then it is 

 not uncommon on suitable localities. 



It is chiefly seen on moisty and swampy ground, but I also observed it on the large 

 grassy plains at Nong Bea in Northwestern Siarn and the specimens in my collection were 

 both shot along the Meh Tha river in Northern Siarn. Occasionally it was also observed 

 among the hills of the Koon Tan range. Most common, however, on the great swamps 



