Front Matter

Display inventory of the Torrent Duck

5-15

Territoriality in Snow Geese or the protection of parenthood--Ryder's and Inglis' hypotheses re-assessed

16-19

Territorial behaviour in breeding geese--a re-examination of Ryder's hypothesis

20-26

Pairing and breeding of Mute Swans in relation to natal area

27-30

Quantification of the relationship between Mallard nest initiation and temperature

31-34

Age-related aspects of Mallard reproduction

35-39

Renesting by the Redhead Duck

40-44

Nesting patterns of captive Mandarin Ducks

45-54

Trumpeter Swan nesting behaviour

55-71

Weights of females Barnacle Geese during breeding

72-74

Parental and brood behaviour of Emperor Geese in Alaska

75-85

Variation in cohesion of a brood of Mute Swans

86-89

Moult and moult migration of waterfowl in Estonia

90-98

The moulting of Tufted Duck and Pochard on the IJsselmeer in relation to moult concentrations in Europe

99-108

Moulting Eiders in Orkney and Shetland

109-113

The weights of some southern African Anatidae

114-117

Population composition, and return according to breeding status, of Bewick's Swans wintering at Slimbridge, 1963 to 1976

118-128

Variation in the production of young of swans wintering in Sweden

129-134

Diseases of seaducks in captivity

135-141

Diseases of sheldgeese and shelducks in captivity

142-146

Prevalence of parasitic heartworms in swans in England

147-150

Aerial scratching, leeches and nasal saddles in Green-winged Teal

151-153

Poisoning of Dark-bellied Brent Geese in Essex, February 1979

154

Roosting behaviour of Long-tailed Ducks in relation to possible oil pollution

155-158

Wildfowl at risk, 1979

159-162

Research, conservation and education

163