THE BIRDS OF KOHAT AND THE KURRAM VALLEY. 979 



op. cit. xv., p. 354 (Quetta: fairly common in winter) ; Fulton, op. cit. xvi., 

 p. 64 (Chitral : passes through in March and April) ; Gumming, t. c, p. 698 

 (Seistan : common in winter and probably resident) ; Ward, op. cit. xvii., 

 p. 948 (Kashmir). 



Not common in autumn and winter ; but large numbers pass through in 

 spring. Some individuals stay very late, and I have noticed them all 

 through April and up to the 20th of May. 



[1604.] Netta rtjfina. The Red-crested Pochard. 



Rattray, J. B. N. H. S. xii., p. 348 (Thall: occurs in March) ; Marshall, op. 

 cit. xv., p. 354 (Quetta: common in winter); Cumming, op. cit. xvi., p. 698 

 (Seistan : common in winter, probably resident) ; Ward, op. cit. xvii., p. 948 

 (Kashmir: common in February). 



Not common, but found throughout the winter at Dhand Tank, and 

 occasionally elsewhere, up till the end of March. 



[1605.] Nyroca perina. The Pochard. 



Marshall, J. B. N. H. S. xv., p. 354 (Quetta : common in winter) ; dimming,, 

 op. cit. xvi., p. 698 (Seistan : common and doubtless resident) ; Ward, op. cit. 

 xvii., p. 948 (Kashmir). 



Next to the Teal this is our commonest Duck in the cold weather. 



[1606.] Nyroca ferrttgixea. The White-eyed or Ferruginous Duck. 



Marshall, J. B. N. H. S. xv., p. 354 (Quetta: common in February). 

 Cumming, op. cit. xvi. p. 698 (Seistan : common in winter) ; Ward, op. cit. 

 xvii., p. 948 (Kashmir: a common resident). 



Less common than the last species, but fairly numerous on Dhand Tank 

 in the winter. It leaves towards the end of March. 



[1609.] Nyroca puligula. The Tufted Pochard. 



Marshall, J. B. N. H. S. xv., p. 354 (Quetta: common in March); Cum- 

 ming, op. cit. xvi., p. 698 (a winter visitor in Seistan) ; Ward, op. cit. xvii., 

 p. 948 (common, especially in March). 



I have only met with this Duck at Dhand, where it is abundant and 

 occurs throughout the winter, at least up till the end of March. 



[1611.] Erismatura leucocephala. The White-headed Duck. 



Marshall, J. B. N. H. S. xv., p. 354 (Quetta: February); Cumming, 

 op. cit. xvi., p. 699 (Seistan : very common in winter, perhaps resident) ; 

 Ward, op. cit. xvii., p. 949 (not common, but a regular winter visitor in 

 Kashmir) . 



Very rare. I observed single birds at Dhand on the 18th of November, 

 1906, and the 21st of February, 1907, but could not get a shot ; it is, how- 

 ever, an unmistakeable species. Capt. MacNab, I. M.S., shot one at 

 Mardan (thirty miles north of our limits) on the 12th of November, 1899 

 {vide J. B. N. H. S. xiii., p. 182). 



[1612.] Mergus albellus. The Smew. 



