COMMON POCHARD. 465 



it has been killed on the flooded waters of the Derwent, 

 while near Beverley the late W. W. Boulton recorded it 

 as abundant in the winter of 1864-65 ; indeed, it is one of 

 the commonest ducks on the river Hull in severe weather. 

 The Pochard is not a common species in the Teesmouth 

 district, though I have noted it at intervals in winter, and 

 have seen a specimen on the Coatham Marshes ; it is also 

 recorded from the Esk Valley, near Whitby. 



As regards local names, Dunbird, Red Head, and Poker 

 appear to be used indifferently ; and Pokker, Dunpocker, 

 and Bighead are additional names by which it is known 

 on the river Hull. 



[The so-called " American Scaup " reported at Scarborough 

 {Zool. 1855, pp. 4631, 4947) proved, on examination by the 

 late J. Hancock, to be a female Pochard.] 



FERRUGINOUS DUCK. 



Fuligula nyroca {Guldensiadi). 



Casual visitant, of very rare occurrence. 



This small duck is resident in southern Europe, and 

 migrates in winter to northern and central Africa. 



It is but a rare casual visitant to this county, having 

 been noted on six occasions only. 



The first was taken in Coatham Decoy on 17th January 

 1850, and recorded by T. S. Rudd in the Zoologist (1850, 



P- 2773). 



Near Huddersfield a specimen was shot at Dalton, in 

 December 1858 (Hobkirk's "Huddersfield," ist Ed. 1859, 



P- 145). 



A pair in the collection of Mr. Thomas Boynton of Brid- 

 lington, was, as that gentleman informs me, formerly in 

 the late W. W. Boulton's collection at Beverley, and is prob- 

 ably of local origin. 



On 23rd December 1876, I saw one exposed for sale in a 



