Table of Contents
Front Matter
| Front Matter | |
Articles
| Display behaviour and relationships of the Argentine Blue-billed Duck | |
| Paul A Johnsgard, Cristi Nordeen | 5-10 |
| A comparison of pursuit flights by six North American ducks of the genus Anas | |
| Rodger D Titman, Norman R Seymour | 11-18 |
| Effects of Coots on duck densities in Saskatchewan parkland | |
| Thomas D Nudds | 19-22 |
| Locations and success of duck nests evaluated through discriminant analysis | |
| Bradley C Livezey | 23-27 |
| Pond ecology and its influence on Mallard use in Ontario, Canada | |
| Patrick R Godin, David E Joyner | 28-34 |
| A study of the Abbotsbury Mute Swans | |
| C M Perrins, M A Ogilvie | 35-47 |
| The pre-nesting behaviour of the Greenland White-fronted Goose | |
| A D Fox, J Madsen | 48-54 |
| Time budgets of breeding Mallard in northern Sweden | |
| Cay Asplund | 55-64 |
| Activity budgets of Common Eiders in different housing environments | |
| Jacques Prescott | 65-68 |
| Field feeding by dabbling ducks around the Ouse Washes, England | |
| G J Thomas | 69-78 |
| The importance of food in the determination of the winter flock sites of the Shelduck | |
| N E Buxton | 79-87 |
| Feeding behaviour of wintering Shelduck on the Clyde Estuary | |
| D B A Thompson | 88-98 |
| The winter food and feeding habits of Shelduck in the Camargue, France | |
| John G Walmsley, Michael E Moser | 99-106 |
| Food and populations of Surf Scoters in British Columbia | |
| Kees Vermeer | 106-116 |
| A review of Bufflehead sex and age criteria with notes on weights | |
| Charles J Henny, Bette J Carter, Bette J Carter | 117-122 |
| Geographical variation in the bill patterns of Bewick's Swans | |
| D K Scott | 123-128 |
| Geographical variation in the bill patterns of Whooper Swans | |
| M A Brazil | 129-131 |
| The microstructure of avian eggshells, adaptive significance and practical implications in aviculture | |
| R G Board | 132-136 |
| The waterbirds of Lake Junin, central Peru | |
| M P Harris | 137-145 |
| Numbers and distribution of wild geese in the Netherlands, 1974-1979 | |
| Jan Rooth, Barwolt Ebbinge, Anton van Haperen, Martin Lok, Arend Timmerman, Jules Philippona, Leo van den Bergh | 146-155 |
| Diseases of perching ducks in captivity | |
| N Hillgarth, J Kear | 156-162 |
| Recent publications of IWRB | |
| Anonymous anonymous | 163-168 |
Reports
| Numbers of swans and ducks in Britain, 1976-77 to 1979-80 | |
| 171 |
| Numbers of geese in Britain and Ireland, 1980-1981 | |
| 172 |
| Ringing by the Wildfowl Trust, 1980 | |
| 173 |
| Wildfowl Trust avicultura! report, 1980 | |
| 174-175 |
| Publications, 1980, by or with the assistance of Wildfowl Trust staff and facilities | |
| 176 |
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