224 Mr. C. Boden Kloss 07i Birds [Ibis, 



Besides being smaller the females have darker heads than 

 the males. 



When freshly moulted the distal half of the tail-feathers 

 is of the same fulvous colour as the rump-patchy but in worn 

 plumage the colour on the tail has to a large extent faded to 

 whitish. 



The birds from eastern Siam have the pale portion of the 

 tail considerably larger than have the others. 



"T 129. Qraculipica nigricoUis (Payk.)« 

 1 ? . Lat Bua Kao, 



1 ^. Koh Lak. 



Iris (male) grey-white, (female) dark ; orbital skin yellow ;- 

 bill black ; feet (male) stone-grey, (female) pale yellow and. 

 grey. 



T. L. 300, 284 ; W. 156, 155. 



The female from Lat Bua Kao has the feathers of the tail, 

 wings, and back much more extensively and largely tipped 

 with white than the male from Koh Lak, and the blackish 

 bases of the tail-feathers are completely hidden by the lower 

 coverts so that the tail appears white throughout below. 



-V 130. ^thiopsar grandis (Moore), 



2 c? , 1 ? . Lat Bua Kao. 



1 <S ■ Koh Lak. / 



Iris brown ; bill and feet yellow, . 



Males: T. L. 255, 250, 255; W. 129, 134, 135. 



Female: T. L, 247; W. 124. 



The frontal feathers of the male from Koh Lak when 

 drawn forward extend considerably beyond the tip of 

 the bill. 



This bird goes about in large flocks, and near my camp at 

 Lat Bua Kao there was a huge hollow clump of bamboo 

 where hundreds used to spend the midday hours, so busy 

 singing and amusing themselves that I used to creep into its 

 centre without being noticed by birds which were only four 

 or five yards away. 



