. Bulletin of the British Ornithologists' Club. Bulletin 171 Vol. 81 We have found white neck spots or semi-rings as variants in thj following species:— European Green-winged Teal*, Yellow-billed TeaP'\ Mandarin Duck, Gadwall*, Anas strepera Linnaeus', Salvadori's Duck, White-winged Wood Duck and Muscovy Duck. A white neck ring also occurs as a transient character in some eclipse drake Pintail*, Anas acuta Linnaeus and in immature to first winter drake Shoveler*, Anas clypeata Linnaeus. (4) Tl:c characters in combination. All three characters have only been found in combination in the M
. Bulletin of the British Ornithologists' Club. Bulletin 171 Vol. 81 We have found white neck spots or semi-rings as variants in thj following species:— European Green-winged Teal*, Yellow-billed TeaP'\ Mandarin Duck, Gadwall*, Anas strepera Linnaeus', Salvadori's Duck, White-winged Wood Duck and Muscovy Duck. A white neck ring also occurs as a transient character in some eclipse drake Pintail*, Anas acuta Linnaeus and in immature to first winter drake Shoveler*, Anas clypeata Linnaeus. (4) Tl:c characters in combination. All three characters have only been found in combination in the Mallard, Muscovy Duck and Mandarin Duck. The white chin and neck spots are found in combination in these three and in Salvadori's Duck. The development of the albinistic patterning is shown therefore to be a graduated phenomenon, associated with in-breeding in domestication, but also occurring to a lesser degree in the wild state. Acknowleclgcnients. We would like to thank Mr. J. D. Macdonald for facilities to study specimens in the British Museum (Natural History); also. Fig. I. —Albinistic Pallcrning in the Milliard Lower bird:- 12th October, 1958; Olford, Kent. All others:— 16th March, 195S; Scvenoaks. Kent. Mr. Peter Scott and the Wildfowl Trust for the presentation of a Sal- vadori's Duck and the loan of others. The following also provided us with valuable specimens: Dr. H. Cileadow. Dr. David Harrison. It. Cdr. A. S. McLean, the late Mr. Foster Stubbs, Mr. John VVardell and Captain J. V. Wilkinson. Scvenoaks L'rban District Council L'ranlcd us. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists' Club. London : British Ornithologists' Club
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