Further notes on the habits of Sheld-Duck

IN British Birds for January, 1 9 3 5 (Vol. X X V I I I . , pp. 218-224), the writer gave an account of the courtship and other habits of Sheld-Duck (Tadorna tadorna). Since then other matters of interest in the life-history of this species have come under notice, and these are detailed in this paper. Little additional material has been found relating to the courtship. Reference is made in the 193...