Front Matter

1-4

notice to contributors

On the biology of the Spectacled Eider

5-15

The Shelduck population of the Ythan estuary, Aberdeenshire

16-28

Criteria for ageing embryos of the Eider

29-32

Brood care, pair bonds and plumage in southern African Anatini

33-40

The survival of broods of the Egyptian Goose in Uganda

41-48

Territorial behaviour of wild Shovelers at Delta, Manitoba

49-55

On the behaviour of the White-headed Duck with especial reference to breeding

56-66

The development of rank order and aggressiveness in a group of juvenile Greylag Geese

67-73

Climbing ability of ducklings of some cavity-nesting waterfowl

74-80

Foot adaptations in four species of Whistling Duck Dendrocygna

81-83

The behaviour of wintering Smew in southern Sweden

84-88

The number of adult Eiders in the Baltic Sea

89-94

Range expansion and population increase of the Gadwall in eastern North America

95-101

The Wildfowl Trust expedition to Spitsbergen, 1973

102-116

Preliminary observations on waterfowl of Western Madagascar

117-122

Etho-ecological studies of Teal wintering in the Camargue (Rhone Delta, France)

123-133

An ecological outline of a moulting area of Teal, Vejlerne, Denmark

134-142

The ecology of the invertebrate community of Borough Fen Decoy pond

143-148

Ten years of intensive late-winter surveys for waterfowl corpses on the north-west shore of the Wash, England

149-154

The taxonomy and relationships of the northern swans

155-162

Wildfowl 25

Research, Education, Conservation and Publications

163-175