BRITISH BIRDS. 45 
THE CASTANEOUS DUCK. 
( Ana$ nyraca*) 
A coloured drawing, from which the above figure 
was engraven, was presented to this work by the Rev. 
William Cornforth, of Long Stanton Rectory, near 
Cambridge. He esteemed it a very rare bird, not 
having seen it before, nor its description in any work 
on ornithology. It was shot on a pond near the little 
village of Hare-street, Essex. Montagu, after many 
doubts, and much investigation, says, it has only late- 
ly been considered a new British species, having be- 
fore been confounded with the Ferruginous Duck of 
Mr Pennant; and he acknowledges his obligations to 
Mr Foljambe, for enabling him, from three speci- 
mens in his museum, to consider this as being distinct 
from the Ferruginous Duck, and has affixed the name 
as above, and given a description of it, which nearly 
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