130 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 



Fain. Ardeidae. 



285. Pyrrherodias manillensis. Meyen. The Eastern Purple Heron. 



Ardca manillensis: Gyldenstolpe I p. 72; Gairdner p. 1">2. 



The Eastern Purple Heron was fairly common at the swanips of Northern Siarn. 

 Sometimes it even occurred on the paddy-fields together with some other kind of Herons, 

 but it seems mostly to keep to reed-swamps where there is plenty of cover to eoneeal in. 

 It is rather shy and not easy to obtain. 



286. Ardea cinerea jouyi. Clark. — The Common Heron. 



Ardca cinerea: Gyldenstolpe I p. 72; Gairdner p. 31; Gairdner p. 152. 



J 1 Xong Meh Lua 7 /s 1914. L = 1120 mm.; W = 43(i mm.; T = 184 mm.; C = 129 mm. — Irides; 

 yellow. Bill: liorn colour (lower mandible dirty yellow). Legs: bröwn. 



A. H. Clark has (Proc. U. S. Nat. Mus., Vol. 32, 1907, p. 468) separated the eastern 

 race of the common Grey Heron on account of its having decidedly paler wing-coverts, 

 vvhich are almost ashy white. The upper parts of the body are also a little paler, though 

 not considerably so. 



During my Expeditions to Siarn I only collected two specimens, one during my 

 first journey 1911 — 1912 and the other one during the last one. 



Both these specimens have decidedly paler wing-coverts than European specimens 

 shot at the same time of the year, and it therefore seems as if a separation of an eastern 

 race would hold good. 



It probably breeds in Siarn and Burma. However, I never succeeded in finding 

 its nest, but one specimen was shot on the 7th of August 1914 and the other one on the 

 lst of April 1912 and both these dates seems to indicate that it is not merely as a migratory 

 bird as it occurs in certain parts of Siarn. 



In the Siamese Malayä a few specimens were observed in a mangrove swamp at 

 the neighbourhood of Koh Lak during my stay there from December to February. 



287. Mesophoyx intermedia. Wagl. The Smaller Egret. 



Herodias intermedia: Gyldenstolpe 1 p. 72. 



This Egret is quite common during the cold season and occurs together with other 

 members of the same family on the large swampy country along the Menam river. 



In the Siamese Malaya I also met with it, but down there it was not quite as com- 

 mon as in other parts of the country and only a few specimens were met with on a swampy 

 plain near the coast. 



