The International Swan Symposium provides an opportunity for experts in the field to discuss the latest research findings and present relevant papers covering all aspects of swan conservation and ecology.

5th International Swan Symposium 2014: Easton, Maryland, USA

4th International Swan Symposium 2002: Warrenton, Virginia, USA

The proceedings of the Fourth International Symposium were published in Waterbirds, which is the scientific journal of the Waterbird Society. It has been the Society’s long-standing policy not to allow posting of PDFs on publicly available web pages because a large portion of its operating revenue now comes from electronic sources such as BioOne and JSTOR. However, the Society advise that PDFs of articles can be obtained from JSTOR via the hyperlinks below, or via. Swan SG members may also wish to become members of the Waterbird Society (www.waterbirds.org www.osnabirds.org/Apply.aspx), which permits access to all published content since 2002 on BIoOne (including other swan articles).

Census of Trumpeter Swans on Alaskan Nesting Habitats by Bruce Conant, John I. Hodges, Deborah J. Groves and James G. King

Trumpeter Swan Numbers and Distribution in Western Canada by James S. Hawkings, André Breault, Sean Boyd, Mike Norton, Gerard Beyersbergen and Paul Latour

Population Trends and Productivity o f Tundra Swans on the Central Arctic Coastal Plain, Northern Alaska by Robert J. Ritchie, James G. King, Alice A. Stickney, Betty A. Anderson, John R. Rose, Ann M. Wildman and Sandy Hamilton

Population Trends, Productivity, and Harvest of Eastern Population Tundra Swans by Jerome R Serie, Dennis Luszcz and Robert V. Raftovich

The Status and Distribution of the Icelandic W hooper Swan Population: Results of the International Whooper Swan Census by Peter A. Cranswick, Kendrew Colhoun, Olafur Einarsson, J. Graham McElwaine, Arnthor Gardarsson, Mark S. Pollitt and Eileen C. Rees

Long-term Trends in the Number of Whooper Swans Molting at Lake Myvatn, Iceland, by Amthor Gardarsson, Arni Einarsson and Svenir Thorstensen

Numbers of Mute Swans and Whooper Swans in Sweden by Lei J Nilsson

Numbers and Distribution of Whooper Swans Breeding, W intering and on Migration in Estonia by Leho Luigujoe, Andres Kuresoo and Agu Leivits

Reassessment of the Southern Limit for Whooper Swans Breeding in Northwest Russia by Tatiana Y. Hokhlova and Alexandr V. Artemjev

Numbers and Ecology of Swans W intering in Japan by John O. Albertsen and Yuji Kanazawa

Annual Variation in the Proportion of Whooper Swans and Bewick’s Swans Breeding in Northern European Russia byYuri M. Shchadilov, Eileen C. Rees, Anna V. Belousova and John M. Bowler

Status and Breeding Ecology of Bewick’s Swans in the Lena Delta, Yakutia, Northern Asia by Vladimir I. Pozdnyakov

Distribution and Population Estimates for Swans in the Siberian Arctic in the 1990s by Evgeny E. Syroechkovski, Jr.

Effects of El Niño Southern Oscillation on Numbers of Black-necked Swans at Rio Cruces Sanctuary, Chile by Roberto P. Schlatter, René A. Navarro and Paulo Corti

Effects of El Niño on Abundance and Breeding of Black-necked Swans on El Yali Wetland in Chile by Yerko A. Vilinä, Hernán L. Cojré, Celeste Silva-García, María D. García and Carola Pérez-Friedenthal

Satellite Tracking of Bewick’s Swan Migration from Lake Nakaumi, Japan by Kaname Kamiya and Kiyoaki Ozaki

Teaching Migration Routes to Canada Geese and Trumpeter Swans Using Ultralight Aircraft by William J. L. Sladen, William A. Lishman, David H. Ellis, Gavin G. Shire and Donielle L. Rininger

Use of Winter Translocations to Expand Distribution of Trumpeter Swans in the Western United States by Roderick C. Drewien, Kent Clegg and Ruth E. Shea

Population Trends and Habitat Use of Tundra Swans Staging at Long Point, Lake Erie by Scott A. Petrie, Shannon S. Badzinski and Kerrie L. Wilcox

Tundra Swan Use of the Upper Mississippi River during Autumn Migration by Erik M. Thorson, James A. Cooper and Eric Nelson

Sex Differences in the Movements and Mortality of Mute Swans by Richard Collins

Effect of Tundra Swan Grazing on W inter Wheat in North Carolina by David R Crawley, Jr. and Eric G. Bolen

Effects of Grazing on Grasslands by Wintering Whooper Swans by Kendrew Colhoun and Keith R Day.

Habitat Usage and Field Choice by Mute and Whooper Swans in the Tweed Valley, Scotland by Helen Chisholm and Chris Spray

Habitat Use and Activity Patterns of Mute Swans at a Molting and a W intering Site in Denmark by Thomas Eske Holm

Population Structure, Survival Rates and Productivity of Mute Swans Breeding in a Colony at Abbotsbury, Dorset, England by Robin H. McCleery, Christopher Perrins, David Wheeler and Stephen Groves

Occupancy and Turnover of Whooper Swans on Territories in Northern Iceland: Results of a Long-term Study Olafur Einarsson and Eileen C. Rees

Growth and Survival of Whooper Swan Cygnets Reared in Different Habitats in Finland by Hanne Lise Knudsen, Bjarke Laubek and Arvo Ohtonen

Nesting Ecology of Bewick’s Swans on Vaygach Island, Russia by Evgeny V. Syroechhovsky, Konstantin E. Litvin and Elena N. Gurtovaya

Spatial Distribution, Habitat Characteristics and Nest-site Selection by Tundra Swan on the Central Arctic Coastal Plain, Northern Alaska by Alice A. Stickney, Betty A. Anderson, Robert J. Ritchie and James G. King

Nesting Ecology of Tundra Swans on the Coastal Yukon-Kuskokwim Delta, Alaska by Christopher A. Babcock, Ada C. Fowler and Craig R Ely

Tundra Swans of the Lower Alaska Peninsula: Differences in Migratory Behavior and Productivity by Christian P. Dau and John E. Sarvis

Egg Size Variation in Mute Swans: Its Influence on Egg Hatchability, Cygnet Body Size and Cygnet Survival by Andrzej Czapulak

Timing of Primary Molt in Breeding Mute Swans by Andrzej Czapulak

Parental Care in Tundra Swans during the Pre-fledging Period by Susan L. Earnst

Parental Care Behavior and Double-brooding in Coscoroba Swans in Central Chile by Gwenda L. Brewer and Yerko Vilinä

Activity Budgets of Nesting T rumpeter Swans in Interior Alaska by Karen S. Bollinger and Rodney J. King

Laying and Incubation Behavior of Captive Trumpeter Swans by Harry G. Lumsden

Restoration of Trumpeter Swans in North America: A Century o f Progress and Challenges by Ruth E. Shea, Harvey K. Nelson, Laurence N. Gillette, James G. King and David K. Weaver

Overview of the Trumpeter Swan Reintroduction Program in Ontario by Harry G. Lumsden and Mark C. Drever

Development of an Expert System for Assessing Trumpeter Swan Breeding Habitat in the Northern Rocky Mountains by Richard S. Sojda, John E. Comely and Adele E. Howe

Bayesian Time Series Analysis of Segments o f the Rocky Mountain Trumpeter Swan Population by Chris K. Wright, Richard Sojda and Daniel Goodman

Potential Wind Park Impacts on W hooper Swans in Winter: the Risk o f Collision by Jesper Kyed Larsen and Preben Clausen

Threats to Whooper Swans in Xinjiang, China by Ming Ma and Dai Cai

Age and Sex Differences in Biometrics Data Recorded for W hooper Swans W intering in Japan by John O. Albertsen, Yotsugu Abe, Shinryu Kashikawa, Akira Ookawara and Katsumi Tamada

A Preliminary Analysis of Mute Swan Biometrics in Relation to Sex, Region and Breeding Status by Jonathan T. Coleman and Albert E. Coleman

The Dynamics of a Flock of Mute Swans at Berwick-upon-Tweed with Particular Reference to the Effects of Age, Sex, Social Status and Body Condition on Molt by Jonathan T. Coleman, ChristopherJ. Spray, Stephen M. Percival, Andrew T. Rickeard and Peter Yeoman

The Accuracy o f Sexing Mute Swan Cygnets by Cloacal Examination by Allan W. Brown and Lyndesay M. Brown

Isozyme Analysis Reveals Genetic Differences Between Three Trumpeter Swan Populations by Charles A. Pelizza and Hugh B. Britten

Vocal Characteristics of Trumpeter and Tundra Swans and Their Hybrid Offspring by Thomas C. Wood, Thomas O. Brooks and William J. L. Sladen

Trends in Mute Swan Blood Lead Levels: Evidence of Grit R educing Lead Poisoning by John O’Halloran, Patrick Smiddy, Xie Quishi, Ruth O’Leary and Catherine Hayes

Survival and Reproductive Success of Trumpeter Swans after T reatment for Lead Poisoning by Laurel Degemes, Steve Kittelson, Madeleine Linck and Patricia Manthey

Baseline Hematology and Clinical Chemistry Results from Captive-raised Trumpeter Swans by Glenn H. Olsen, Donielle L. Rininger, Marika K. Ets and William J. L. Sladen

3rd International Swan Symposium 1989: Oxford, Oxfordshire, UK

The Third International Swan Symposium: a Synthesis by Susan L Earnst

Comparative demography of the swans: a review by Jonathan Bart, Susan L Earnst, Philip J Bacon

Population trends of the Mute Swan Cygnus olor in the Palearctic by Maria Wieloch

The status and distribution of the Mute Swan Cygnus olor in the USSR: a review of recent censuses by G A Krivonosov

Status of the Mute Swan, Cygnus olor and the Whooper Swan C. cygnus in Silesia (SW Poland) by Andrzej Czapulak

Dynamics and age structure of wintering Mute Swans Cygnus olor in south-eastern Poland by Alicja Jozkowicz, Kazimierz Walasz

Recent status of Mute Swans Cygnus olor in the Ukraine, USSR by A I Korzyukov, A I Koshelev, V V Serebryakov

Numbers and distribution of Mute Swans Cygnus olor Whooper Swans C. cygnus and Bewick’s Swans C. bewickii in the Black Sea area of the Ukraine, USSR by T B Ardamatskaya, A I Korzyukov

The distribution and status of Bewick’s Swans Cygnus bewickii, Tundra Swans C. columbianus and Whooper Swans C. cygnus in the “Extreme Northeast” of the USSR by A Ya Kondratiev

Distribution and numbers of Bewick’s Swans Cygnus bewickii in the European Northeast of the USSR by Yu N Mineyev

Number and distribution of Mute Swans, Cygnus olor, Bewick’s Swans, C. bewickii, and Whooper Swans C. cygnus in the West Siberian plain by Yu S Ravkin

Numbers, distribution and breeding success of Whooper Swans Cygnus cygnus and Mute Swans C. olor in central Kazakhstan, USSR, in 1985 and 1987 by V G Vinogradov, E M Auezov

The current status of Whooper Swan Cygnus cygnus and Bewick’s Swan Cygnus bewickii populations in the Prichankayaskaya Lowland, USSR by Y N Glushenko, V N Bocharnikov

Winter distribution of Tundra Swans Cygnus columbianus breeding in Alaska and Western Canadian Arctic by Roland J Limpert, William J L Sladen, Hubert A Allen, Jr

The status of Trumpeter Swans Cygnus buccinator wintering on Vancouver Island, British Columbia, Canada, in 1989 by R W McKelvey, R G Davies, K Morrisson

Demography of Black-necked Swans Cygnus melancoryphus in three Chilean wetland areas by Roberto Schlatter, Juan Salazar, Alex Villa, Javiera Meza

Survival rates of young Mute Swans Cygnus olor by C M Perrins

Factors affecting the number of pairs and breeding success of Mute Swans Cygnus olor in an area of south Staffordshire, England, between 1961 and 1985 by A E Coleman, C D T Minton, J T Coleman

Between year variation and causes of mortality in the non-breeding population of the Mute Swan Cygnus olor in the Netherlands, with special reference to hunting by Hans Esselink, Jan H Beekman

Population size, breeding success and distribution of Bewick’s Swans Cygnus columbianus bewickii wintering in Europe in 1986-87 by Sjoerd Dirksen, Jan H Beekman

Continuity and advancement of Trumpeter Swan Cygnus buccinator and Tundra Swan C. columbianus population monitoring in Alaska by Bruce Conant, John I Hodges, James G King

Whooper Swan Cygnus c. cygnus population dynamics in Finland by Antti Haapanen

Demographic analyses of a Trumpteter Swan Cygnus cygnus buccinator population in Western USA by Carl D Mitchell, Ruth Shea, Dave C Lockman, Janissa R Balcomb

Population dynamics of Mute Swans Cygnus olor in the Outer Hebrides, Scotland by  J Spray

Breeding performance of an Irish Mute Swan Cygnus olor population by Richard Collins

An analysis of Mute Swan Cygnus olor breeding data by P J Walter, P J Bacon, J Sears

Mute Swans Cygnus olor breeding in the Volga Delta, USSR by G A Krivonosov

The breeding ecology of the Mute Swan Cygnus olor in Poland – preliminary report by Andrzej Czapulak, Maria Wieloch

Breeding biology of Bewick’s Swans Cygnus bewickii in Chukotka, Far Eastern USSR by A Ya Kondratiev

Population status and productivity of Tundra Swans Cygnus columbianus in North America by Jerome R Serie, James C Bartonek

Demography of Eastern Population Tundra Swans Cygnus columbianus by Jonathan Bart, Roland Limpert, Susan Earnst, William Sladen, James Hines, Thomas Rothe

Lifetime reproductive success of Mute Swans Cygnus olor in Denmark by P Andersen-Harrild, P J Bacon

Dispersion dynamics of breeding Mute Swans Cygnus olor in Northwest Germany by Erwin Rudolf Scherner

The breeding success of Whooper Swans Cygnus cygnus nesting in upland and lowland regions of Iceland – a preliminary analysis by Eileen C Rees, J M Black, C J Spray, S Thorisson

Factors affecting breeding success in Bewick’s Swans Cygnus bewickii by D K Scott

Movements of Whooper Swans Cygnus cygnus neckbanded in Iceland by Arnthor Gardarsson

Bimodality of spring migration of the Whooper Swan Cygnus cygnus in Finland by Antti Haapanen, Hannu Hautala

Eurasian Whooper Swan Cygnus cygnus migration with particular reference to birds wintering in southern Sweden by Sven Mathiasson

Distribution within the USSR of Bewick’s Swans Cygnus columbianus bewickii marked in Britain by Eileen C Rees

Present status of Mute Swans Cygnus olor, Whooper Swans C. cygnus and Bewick’s Swans C. bewickii in the Eastern Baltic Region by Andres Kuresoo

The migration of swans Cygnus spp., in the Ukraine, USSR by V V Serebryakov, V N Grishchenko, A M Poluda

Migration of Bewick’s Swans Cygnus bewickii and Whooper Swans C. cygnus wintering in Japan through Sakhalin Island and adjacent territories, USSR by V A Ostapenko

Scandinavian/Baltic Mute Swans Cygnus olor in the Netherlands: movements under the influence of severe winter weather and their consequences by Sjoerd Dirksen, Hans Esselink

Bewick’s Swans Cygnus columbianus bewickii in the Netherlands: numbers, distribution and food choice during the wintering season by Sjoerd Dirksen, Jan H Beekman, Teus H Slagboom

Bewick’s Swan Cygnus columbianus bewickii utilising the changing resource of Potamogeton pectinatus during autumn in the Netherlands by Jan H Beekman, Mennobart R van Eerden, Sjoerd Dirksen

Feeding activities of Bewick’s Swans Cygnus columbianus bewickii at a migratory site in the Estonian SSR by Eileen C Rees, Jonathan M Bowler

Whooper Swan Cygnus cygnus egg production in different nesting habitats in Finland by Arvo Ohtonen, Kauko Huhtala

Costs and benefits of extended parental care in Tundra Swans Cygnus columbianus columbianus by Susan L Earnst, Jonathan Bart

Reproductive biology of Black-necked Swans Cygnus melancoryphus at three Chilean wetland areas and feeding ecology at Rio Cruces by Roberto P Schlatter, Juan Salazar, Alex Villa, Javiera Meza

Black-necked Swan Cygnus melancoryphus and Coscoroba Swan Coscoroba coscoroba in a wetland in Uruguay by R Vaz-Ferreira, F Rilla

Distribution of Whooper Swans Cygnus cygnus in Britain and Ireland in relation to habitat type and flock social structure by Jeffrey M Black, David G Salmon, Mike Bell

Laying date and clutch size in relation to body weight in the Mute Swan Cygnus olor by Jan H Beekman

Growth and biometry of Mute Swan Cygnus olor cygnets in Groningen, the Netherlands by Joep J de Leeuw, Jan H Beekman

Biometrics and timing of primary moult of non-breeding Mute Swans Cygnus olor at Lake IJsselmeer, the Netherlands by Klaas van Dijk, Mennobart R van Eerden

Cygnus olor immutablis in Poland by Maria Wieloch, Andrzej Czapulak

Alloparental behaviour in Mute Swans Cygnus olor detected by DNA fingerprinting by A Meng, D T Parkin

Daily time and energy budgets in Whooper Swans Cygnus cygnus and Bewick’s Swans Cygnus bewickii in the breeding season by S K Kritsov, Yu N Mineyev

Population genetics of the Mute Swan Cygnus olor with especial reference to colonial breeding by P J Bacon, C M Perrins

Plasma LH concentrations in Mute Swans Cygnus olor of different ages during spring by A Dawson, A E Coleman

Moult and dispersal of Mute Swans Cygnus olor in East Scotland: a preliminary analysis by C J Spray, N Atkinson

The biology of incubation in Black Swans Cygnus atratus: preliminary results by Christine Brugger, Michael Taborsky

Models of swan population dynamics and growth – a review by P J Bacon, Jan H Beekman

On the use of capture-recapture methods for studying swans by Jonathan Bart

Methods of band survival analysis applied to studies of the Tundra Swan Cygnus columbianus by Hubert A Allen, Jr, William J L Sladen, Roland J Limpert

Trumpeter Swan Cygnus buccinator range expansion programs in the northern Rocky Mountains, USA by Ruth Shea, Dave C Lockman, Carl D Mitchell

Causes of mortality in Trumpeter Swans Cygnus buccinator in Minnesota 1986-89 by L A Degernes, R K Frank

Mortality in Tundra Swans Cygnus columbianus by James C Bartonek, Jerome R Serie, Kathryn A Converse

Harvest management of Tundra Swans Cygnus columbianus in North America by Jerome R Serie, James C Bartonek

Swans should not be hunted by William J L Sladen

Current conservation status and problems of swan population management in the USSR by Yu M Schadilov

The impact of hunting on a protected species, the Whooper Swan Cygnus cygnus at Lake Constance by Martin Schneider-Jacoby, Peter Frenzel, Harald Jacoby, Gerhard Knötzsch, Karl-Heinz Kolb

Lead poisoning in Mute Swans Cygnus olor in England by Jane Sears, Alan E Hunt

Lead poisoning in Mute Swans Cygnus olor in Ireland: a review by John O ’Halloran, Alan A Myers, P F Duggan

Treatment of lead poisoning in Trumpeter Swans Cygnus buccinator by Laurel A Degernes

2nd International Swan Symposium 1980: Sapporo, Hokkaido, Japan

Ten years of swan counts in Japan by M Horiuchi

Present status of the swans wintering in Korea by Pyong-Oh Won

Numbers of swans wintering in the United States by J C Bartonek, W W Blandin, K E Gamble and H W Miller

A correlation between Cygnus columbianus columbianus territories and water bodies in western Alaska by J G King and J I Hodges

The status and future of the Alaska population of Cygnus Cygnus Buccinators by J G King

Status of Cygnus olor in the eastern United States by G Fenwick

The numerical distribution and conservation requirements of swans in northwest Europe by G L Atkinson-Willes

Cygnus columbianus bewickii in the border lakes of the Ijsselmeer polders by E P R Poorter

On the migration routes of swans in Hokkaido, Japan by S Matsui, N Yamanouchi and T Suzuki

The cold air current in the Khabarovsk area, and the correlation with swan numbers at Lake Hyoko, Japan by A Nakanishi

The wild swans at Lake Inawashiro, Japan: some aspects of their Migration by T Ohmori

Neck-banding of swans in Japan by IVI Yoshii

Traditional return of Cygnus columbianus columbianus to wintering areas in Maryland’s Chesapeake Bay by R E Munro

The long term study of Cygnus columbianus bewickii at Slimbridge by M E Evans

The recording and retrieval of bill pattern variations in Cygnus columbianus bewickii by E C Rees

Migration of Cygnus olor ringed in Denmark in winter and during  Moult by P Andersen-Harild

The moulting ground’s relation to breeding and wintering areas as revealed by neck-banded Cygnus olor by S Mathiasson

Preliminary results of neck-collared Cygnus Cygnus Cygnus by N O Preuss

The life span of swans by K Honda

The demography of New Zealand’s Cygnus atratus population by M Williams

Population structure and productivity of Cygnus columbianus columbianus on the Yukon Delta, Alaska by C P Dau

Breeding ecology of Cygnus Cygnus buccinator in Wyoming by R E Shea

Breeding of Cygnus cygnus cygnus in a coastal area of southern  Norway by S Myrberget

Population dynamics of Cygnus olor in Denmark by P Andersen-Harild

An isolated population of Cygnus olor in Scotland by C Spray

Hierarchy in the family group and social behaviour in wintering Cygnus cygnus cygnus by R Kakizawa

Social behaviour of wintering Cygnus columbianus bewickii by D K Scott

Seasonal variation, sex differences and habituation  of territorial behaviour in Cygnus olor by J Demarest

Artificial feeding of swans in Japan by T Ohmori

The feeding of swans and its results by M Hatakeyama

Winter habitat and food of Cygnus cygnus buccinator in British Columbia, Canada by R W McKelvey

Field feeding by Cygnus columbianus columbianus in Maryland by R E Munro

Summer behaviour of Cygnus cygnus cygnus in Iceland by M Brazil

The behavioural ecology of Cygnus cygnus cygnus in central Scotland by M Brazil

Food selection by Cygnus olor in Chesapeake Bay, Maryland by G H Fenwick

Management of swans in the United States by J C Bartonek, W W Blandin, K E Gamble, H W Miller and J P Rogers

Hunting and management of Cygnus atratus in New Zealand by M Williams

Post-mortem examination of Cygnus cygnus cygnus in Japan by K Hattori

Mortality factors of wild swans in British Columbia, Canada by R W McKelvey and A C MacNeill

Disease problems in North American swans by M Friend, P D Hagen, D J Voros and M E McDonald

Heartworm Sarconema eurycerca, a circumpolar infection in swans by W J Seegar

The wild swans at Lake Tofutsu-ko, Hokkaido, Japan by M Tamada

The Trumpeter Swan Society by D K Weaver

Cygnus cygnus buccinator in Skagit Valley, Washington State, USA by M Jordan and R Canniff

Non-professional contributions to swan research by F L Parks, J Evans and E Hake

The swan supporter scheme at Slimbridge and a proposal for an audio-visual programme on swans by M E Evans

Around the year with a Danish swan amateur by E Hansen

The use of Electronic Data Processing (EDP) in Danish swan recording 343 by E Hansen

Anatomical sketch of young wild swans by T Ohmori

Genetic comparison of Cygnus cygnus buccinator populations by E R Vyse and V A Barrett

Weights of Cygnus columbianus columbianus as an indicator of changing resources by W J L Sladen, G H Fenwick and N Primrose

Weight changes in Cygnus olor by P Andersen-Harild

Weight and growth rates of morphological characters of Cygnus olor by S Mathiasson

Population genetics of Cygnus olor by P J Bacon

1st International Swan Symposium 1973: Slimbridge, Gloucestershire, UK

Environmental stress on the Whistling Swan by William W. H. Gunn 

A continental study of Whistling Swans using neck collars by William J. L. Sladen

The use of small airplanes to gather swan data in Alaska by James G. King

Population structure an d productivity of Whistling Swans on the Yukon Delta, Alaska by Calvin J. Lensink

Trumpeter Swan management by Henry A. Hansen

Hyôko: winter habitat of wild swans at Suibara by Rose Lesser

A moulting population of non-breeding Mute Swans with special reference to flight-feather moult, feeding ecology and habitat selection by Sven Mathiasson

Mortality o f the Black Swan in New Zealand—a progress report by Murray Williams

Lead shot in Bewick’s Swans by Mary E. Evans, N. A. Wood and Janet Kear

Leucistic Bewick’s Swans by Mary E. Evans and Tom Lebret

Censuses of Anatidae in the central delta of the Niger and the Senegal delta—January 1972 by Francis Roux

Fluctuations in the numbers of wildfowl on an equatorial hippo wallow by S K Eltringham

Waterfowl in north-east Asia by A A Kistchinski

A cosmopolitan duck moulting resort; Takslesluk Lake Alaska by James G King

Behaviour and distribution of wild geese in south-east Scotland by I Newton, V M Thom, W Brotherston

The management of grassland areas for wintering geese by Myrfyn Owen

The manurial effect of Cape Barren Goose droppings by Richard W Marriott

Studies of shorebirds at Lindisfarne, Northumberland. 1. Feeding ecology and behaviour of the Bar-tailed Godwit by P C Smith, P R Evans 

The systematic status of the Cape Barren Goose as judged by its photo-responses by J Kear, R K Murton

Proximate and ultimate determinants of clutch size in Anatidae by Paul A Johnsgard

Platform-building by male and female Ruddy Ducks by W Roy Siegfried

Icelandic eiders—a few observations by Ralph S Palmer

Maternal nesting behaviour by male Mallards by Charles Dane, Willard Steffen, Patrick Caldwell