Birds of Southern Tibet. 69 



All the specimens belong to the largest form : in b the 

 wing-length is 13*9 inches. 



A very common Tibetan bird; it was observed on the 

 mountains throughout the whole of the country visited by 

 the Commission. During the summer the Choughs retired 

 from the cultivated valleys at Gyantse and Lhasa, but 

 flocks occasionally came down from the hills to feed in the 

 fields. Though a great many birds remained at Tuna during 

 the winter, their numbers increased largely in March ; they 

 then assembled in very large flocks, like Rooks, and were 

 constantly calling. The flocks went off every morning to 

 some distant feeding-grounds, returning to Tuna in the 

 evening, and performing various evolutions in the air as 

 they flew. 



I did not see Pyrrhocurax alpinus in Tibet. 



\- 7. Parus major tibetanus. 



Panes major tibetanus Hartert, Vogel der pal. Fauna, 

 pt. 3. 



No. 1909. S adult. Gyantse, 12,000 feet, April 19, 1901. 

 Bill black ; feet black ; iris dark brown. 



No. 1936. ? adult. Gyantse, 12,000 feet, April 27, 1901. 

 Feet greyish horny. 



No. 1957. S adult. Gyantse, 12,000 feet, May 19, 1904. 



No. 2019. ? adult. Lhasa, 12,200 feet, August 24, 1904. 



No. 2036. S adult. Lhasa, 12,200 feet, Sept. 3, 1904. 

 This specimen is in full moult. 



Very common and breeding at Gyantse, and from the 

 Brahmapoutra Valley to Lhasa — in fact, wherever there were 

 plenty of trees. 



This form resembles P. major in possessing a yellowish- 

 green back, but differs in the amount of white on the tail. 

 It is, moreover, a larger bird. In three Indian specimens 

 taken at random from my collection the wing-measurements 

 are : — 



(1) Male. Garhwal 265" 



(2) Unsexed specimen. Satara, Bombay .. . 2*6" 



(3) Male. Ranikhet, Kmnaon 2"8" 



