Published: 1991-05-14

Front Matter

Contents and editorial

Jane Sears, Philip Bacon

1-6

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Preface

The Third International Swan Symposium: a Synthesis

Susan L Earnst

7-14

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Comparative demography of the swans: a review

Jonathan Bart, Susan L Earnst, Philip J Bacon

15-21

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SECTION ONE: DISTRIBUTION AND STATUS

Population trends of the Mute Swan Cygnus olor in the Palearctic

Maria Wieloch

22-32

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

G A Krivonosov

33-38

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

Andrzej Czapulak

39-43

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Dynamics and age structure of wintering Mute Swans Cygnus olor in south-eastern Poland

Alicja Jozkowicz, Kazimierz Walasz

44-48

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Recent status of Mute Swans Cygnus olor in the Ukraine, USSR

A I Korzyukov, A I Koshelev, V V Serebryakov

49-52

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

T B Ardamatskaya, A I Korzyukov

53-55

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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

A Ya Kondratiev

56-61

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Distribution and numbers of Bewick's Swans Cygnus bewickii in the European Northeast of the USSR

Yu N Mineyev

62-67

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Number and distribution of Mute Swans, Cygnus olor, Bewick's Swans, C. bewickii, and Whooper Swans C. cygnus in the West Siberian plain

Yu S Ravkin

68-72

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Numbers, distribution and breeding success of Whooper Swans Cygnus cygnus and Mute Swans C. olor in central Kazakhstan, USSR, in 1985 and 1987

V G Vinogradov, E M Auezov

73-76

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The current status of Whooper Swan Cygnus cygnus and Bewick's Swan Cygnus bewickii populations in the Prichankayaskaya Lowland, USSR

Y N Glushenko, V N Bocharnikov

77

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Winter distribution of Tundra Swans Cygnus columbianus breeding in Alaska and Western Canadian Arctic

Roland J Limpert, William J L Sladen, Hubert A Allen, Jr

78-83

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The status of Trumpeter Swans Cygnus buccinator wintering on Vancouver Island, British Columbia, Canada, in 1989

R W McKelvey, R G Davies, K Morrisson

84-87

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Demography of Black-necked Swans Cygnus melancoryphus in three Chilean wetland areas

Roberto Schlatter, Juan Salazar, Alex Villa, Javiera Meza

88-94

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SECTION TWO: POPULATION STUDIES

Survival rates of young Mute Swans Cygnus olor

C M Perrins

95-102

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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

A E Coleman, C D T Minton, J T Coleman

103-109

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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

Hans Esselink, Jan H Beekman

110-119

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Population size, breeding success and distribution of Bewick's Swans Cygnus columbianus bewickii wintering in Europe in 1986-87

Sjoerd Dirksen, Jan H Beekman

120-124

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Continuity and advancement of Trumpeter Swan Cygnus buccinator and Tundra Swan C. columbianus population monitoring in Alaska

Bruce Conant, John I Hodges, James G King

125-136

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Whooper Swan Cygnus c. cygnus population dynamics in Finland

Antti Haapanen

137-141

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Demographic analyses of a Trumpteter Swan Cygnus cygnus buccinator population in Western USA

Carl D Mitchell, Ruth Shea, Dave C Lockman, Janissa R Balcomb

142

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

C J Spray

143

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SECTION THREE: BREEDING

Breeding performance of an Irish Mute Swan Cygnus olor population

Richard Collins

144-150

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An analysis of Mute Swan Cygnus olor breeding data

P J Walter, P J Bacon, J Sears

151-156

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Mute Swans Cygnus olor breeding in the Volga Delta, USSR

G A Krivonosov

157-160

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The breeding ecology of the Mute Swan Cygnus olor in Poland - preliminary report

Andrzej Czapulak, Maria Wieloch

161-166

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Breeding biology of Bewick's Swans Cygnus bewickii in Chukotka, Far Eastern USSR

A Ya Kondratiev

167-171

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Population status and productivity of Tundra Swans Cygnus columbianus in North America

Jerome R Serie, James C Bartonek

172-177

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Demography of Eastern Population Tundra Swans Cygnus columbianus

Jonathan Bart, Roland Limpert, Susan Earnst, William Sladen, James Hines, Thomas Rothe

178-184

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Lifetime reproductive success of Mute Swans Cygnus olor in Denmark

P Andersen-Harrild, P J Bacon

185

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Dispersion dynamics of breeding Mute Swans Cygnus olor in Northwest Germany

Erwin Rudolf Scherner

186

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The breeding success of Whooper Swans Cygnus cygnus nesting in upland and lowland regions of Iceland - a preliminary analysis

Eileen C Rees, J M Black, C J Spray, S Thorisson

187

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Factors affecting breeding success in Bewick's Swans Cygnus bewickii

D K Scott

188

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SECTION FOUR: MIGRATION

Movements of Whooper Swans Cygnus cygnus neckbanded in Iceland

Arnthor Gardarsson

189-194

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Bimodality of spring migration of the Whooper Swan Cygnus cygnus in Finland

Antti Haapanen, Hannu Hautala

195-200

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

Sven Mathiasson

201-208

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Distribution within the USSR of Bewick's Swans Cygnus columbianus bewickii marked in Britain

Eileen C Rees

209-213

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

Andres Kuresoo

214-217

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The migration of swans Cygnus spp., in the Ukraine, USSR

V V Serebryakov, V N Grishchenko, A M Poluda

218-223

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Migration of Bewick's Swans Cygnus bewickii and Whooper Swans C. cygnus wintering in Japan through Sakhalin Island and adjacent territories, USSR

V A Ostapenko

224-226

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Scandinavian/Baltic Mute Swans Cygnus olor in the Netherlands: movements under the influence of severe winter weather and their consequences

Sjoerd Dirksen, Hans Esselink

227

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SECTION FIVE: HABITATS, FOOD AND FEEDING

Bewick’s Swans Cygnus columbianus bewickii in the Netherlands: numbers, distribution and food choice during the wintering season

Sjoerd Dirksen, Jan H Beekman, Teus H Slagboom

228-237

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Bewick's Swan Cygnus columbianus bewickii utilising the changing resource of Potamogeton pectinatus during autumn in the Netherlands

Jan H Beekman, Mennobart R van Eerden, Sjoerd Dirksen

238-248

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Feeding activities of Bewick's Swans Cygnus columbianus bewickii at a migratory site in the Estonian SSR

Eileen C Rees, Jonathan M Bowler

249-255

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Whooper Swan Cygnus cygnus egg production in different nesting habitats in Finland

Arvo Ohtonen, Kauko Huhtala

256-259

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Costs and benefits of extended parental care in Tundra Swans Cygnus columbianus columbianus

Susan L Earnst, Jonathan Bart

260-267

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Reproductive biology of Black-necked Swans Cygnus melancoryphus at three Chilean wetland areas and feeding ecology at Rio Cruces

Roberto P Schlatter, Juan Salazar, Alex Villa, Javiera Meza

268-271

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Black-necked Swan Cygnus melancoryphus and Coscoroba Swan Coscoroba coscoroba in a wetland in Uruguay

R Vaz-Ferreira, F Rilla

272-277

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Distribution of Whooper Swans Cygnus cygnus in Britain and Ireland in relation to habitat type and flock social structure

Jeffrey M Black, David G Salmon, Mike Bell

278

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SECTION SIX: BIOMETRICS, PHYSIOLOGY AND GENETICS

Laying date and clutch size in relation to body weight in the Mute Swan Cygnus olor

Jan H Beekman

279-287

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Growth and biometry of Mute Swan Cygnus olor cygnets in Groningen, the Netherlands

Joep J de Leeuw, Jan H Beekman

288-295

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Biometrics and timing of primary moult of non-breeding Mute Swans Cygnus olor at Lake IJsselmeer, the Netherlands

Klaas van Dijk, Mennobart R van Eerden

296-303

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Cygnus olor immutablis in Poland

Maria Wieloch, Andrzej Czapulak

304-309

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Alloparental behaviour in Mute Swans Cygnus olor detected by DNA fingerprinting

A Meng, D T Parkin

310-318

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Daily time and energy budgets in Whooper Swans Cygnus cygnus and Bewick's Swans Cygnus bewickii in the breeding season

S K Kritsov, Yu N Mineyev

319-321

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Population genetics of the Mute Swan Cygnus olor with especial reference to colonial breeding

P J Bacon, C M Perrins

322

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Plasma LH concentrations in Mute Swans Cygnus olor of different ages during spring

A Dawson, A E Coleman

323-324

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Moult and dispersal of Mute Swans Cygnus olor in East Scotland: a preliminary analysis

C J Spray, N Atkinson

325

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The biology of incubation in Black Swans Cygnus atratus: preliminary results

Christine Brugger, Michael Taborsky

326

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SECTION SEVEN: MANAGEMENT AND CONSERVATION

Models of swan population dynamics and growth - a review

P J Bacon, Jan H Beekman

327-335

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On the use of capture-recapture methods for studying swans

Jonathan Bart

336-339

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Methods of band survival analysis applied to studies of the Tundra Swan Cygnus columbianus

Hubert A Allen, Jr, William J L Sladen, Roland J Limpert

340-347

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Trumpeter Swan Cygnus buccinator range expansion programs in the northern Rocky Mountains, USA

Ruth Shea, Dave C Lockman, Carl D Mitchell

348-351

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Causes of mortality in Trumpeter Swans Cygnus buccinator in Minnesota 1986-89

L A Degernes, R K Frank

352-355

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Mortality in Tundra Swans Cygnus columbianus

James C Bartonek, Jerome R Serie, Kathryn A Converse

356-358

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Harvest management of Tundra Swans Cygnus columbianus in North America

Jerome R Serie, James C Bartonek

359-367

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Swans should not be hunted

William J L Sladen

368-375

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Current conservation status and problems of swan population management in the USSR

Yu M Schadilov

376-377

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The impact of hunting on a protected species, the Whooper Swan Cygnus cygnus at Lake Constance

Martin Schneider-Jacoby, Peter Frenzel, Harald Jacoby, Gerhard Knötzsch, Karl-Heinz Kolb

378-382

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Lead poisoning in Mute Swans Cygnus olor in England

Jane Sears, Alan E Hunt

383-388

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Lead poisoning in Mute Swans Cygnus olor in Ireland: a review

John O ’Halloran, Alan A Myers, P F Duggan

389-395

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Treatment of lead poisoning in Trumpeter Swans Cygnus buccinator

Laurel A Degernes

396-397

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Recommendations

M Moser

398-400

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