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
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
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 wild swans at Lake Inawashiro, Japan: some aspects of their Migration by T Ohmori
Neck-banding of swans in Japan by IVI Yoshii
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
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
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
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
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
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
Weight changes in Cygnus olor by P Andersen-Harild
Weight and growth rates of morphological characters of Cygnus olor by S Mathiasson
