THE BIRDS OF BANGKOK. &3 
nal portion is webbed on the outer edge only, except at the very tip, 
for about 76 mm. (3in.). ‘This webbed portion has a tendency to 
eurl or loop inwards: hence the Siamese name—the words hang buany 
meaning ‘ loop-tailed.” The forehead has a short tuft of feathers, 
curling backwards. 
Halnts, etc. This bird appears to be of strictly arboreal habit, 
and captures its insect food on the wing—swooping on it from a perch. 
It has a variety of rich, metallic notes. In Bangkok it is a resident 
species, and is found throughout the suburbs, but more abundantly in 
the well-wooded ones, such as on the west side of the river. 
Distribution. | Robinson and Kloss also record it as occurring 
throughout the (Malay) Peninsula—and therefore, presumably, in 
Trang—while Gyldenstolpe met with it in Eastern, Central and 
Northern Siam. 
Family SYLVIDA—Warblers. 
12 (364). Acrocephalus orientalis. The Hastern Great 
feed- Warbler. 
Description. Length, about 190 mm. (7.5 in.). Upper 
plumage, olive-brown, paler and with a fulvous tinge on the rump and 
upper tail-coverts. Wings and tail, brown, the feathers edged with 
fulvous brown. Chin and threat, whitish, shading into fulvous on 
the breast, abdomen and wnder tail-coverts. The throat and breast 
are generally faintly streaked with brown. . 
Iris, yellowish brown. Baill, dark horny above, dusky flesh- 
colour or dusky yellow below. Mouth, orange or orange yellow. 
Legs, yellowish plumbeons. 
This bird is very similar in size, eolouration and general 
appearance to Arundinax aédon (The Thick-billed Warbler ) which is 
cescribed below, though the bill of the latter is smaller and somewhat 
differently shaped. ‘The main point of difference, however, is in, the 
comparative length of the first primary, as will be seen by reference to 
the accompanying Plate, for the drawing of which I am _ indebted 
to Mr. HE. Healey. In Acrocephalus orientalis the first primary is 
very minute, while in Arundinaw aédon it is about 25 mm. (1 in. ) 
long. 
