38 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OF THE SWEDISH ZOOLOG1CAL EXPEDITIONS TO SIAM. 



Like the other members of the family this species was generally seen in small par- 

 ties togetlier witli Sitta neglecta Wald. and Dendrophila f rontalis, Swains. 



55. Sitta neglecta. Wald. — The Burmese Nuthatch. 



Sitta neglecta: Gyldenstolpe III p. 167. 



J^Koon Tan 4 / 5 1914. L = 95 mm.; W = 79,2 mm.; — J Koon Tan 6 / 5 1914. L == 135 mm.; 



W = 77,3 mm.; T = 44,3 mm.; C = 15 mm. — J Koon Tan */» 1914. L = 125 mm.; W = 81,3 mm.; 



T = 43,2 mm.; C = 15 mm. — £ Doi Par Sakeng "/ 6 1914. L = 128 mm.; W = 78,2 mm.; T = 43 mm.; 

 C = 16 mm. — Irides: greyish brown. Bill: blackish brown. Legs: plumbeous. 



The Burmese Nuthatch is sparsely distributed över the Northern parts of the 

 country. It was nowhere common but some specimens were seen together with Sitta 

 cinnamoventris Blyth in the deciduous dry forests. 



56. Dendrophila frontalis. Swains. — The Velvet-fronted Blue Nuthatch. 



Dendrophila frontalis: Muller p. 372. 



Sitta frontalis: Oustalet 1903 p. 7; Gyldenstolpe II; Gyldenstolpe III p. 167. 



Sex 



Locality 



Date 



Length 



Wing 



Tail 



Culmen 



Tarsus 









mm. 



mm. 



mm. 



mm. 



mm. 



ö" 



Koon Tan 



u / 9 1914 



115 



74 



43 



11,5 



12 



c? 



Koon Tan 



2 76 1914 



112 



73,5 



42,7 



12,5 



11,6 



ef 



Koon Tan 



*/s 1914 



122 



71 



39 



12 



11 



d" 



Doi Par Sakeng 



■7' 1914 



115 



75 



42 



13 



12,2 



9 



Pak Koh 



'73 1914 



110 



74,2 



41 



13 



13 



9 



Koon Tan 



2 7 4 1914 



118 



72,5 



43 



13,1 



12 



9 



Bång Hue Pong 



2 7s 1914 



121 



73 



42,5 



13 



13 



Iris: Yellow (ad.); vinaceous grey (young). Bill: Orange red with black tip (ad.); black (young). 



Fairly common in the deciduous hill-f orests of Northern Siarn; sometimes though 

 more seldom at the outskirts of the evergreen jungles. When observed it generally 

 was in small parties of about 4 to 6 individuals which were busy searching the tree- 

 trunks for insects and giving their presence known by a note, beeing best explained by 

 »chik-chik» repeated several times. 



The colour of the underparts seem to vary rather much and birds shot in July and 

 September have a much more vinaceous-blue under surface than birds shot in March 

 to May. 



The young birds have the bilis quite black; the irides vinaceous grey; the abdomen 

 påle cinnamon and the under tail-coverts whitish buff barred and tipped with cinnamon. 



A bird, shot at Koon Tan on the 29th of May, and still showing traces of beeing 

 immature in the barring of the under tailcoverts, is of rather a remarkable colour beeing 

 påle vinaceous blue on the whole upper parts of the body, this colour being exactly like 

 the colouring of the under parts of the body in freshly moulted birds; the black f rontal 

 band is not so prominent as in other specimens. 



