BIBLIOGRAPHY 



1981 



McLeod, C. R. 1981. Mute Swan killing Bank Vole. Scott. Birds 11: 194. 



1980 



Bech, C. 1980. Body temperature, metabolic rate, and insulation in winter and 

 summer acclimatized Mute Swans ( Cygnus olor ). J. Comp. Physiol. B. Bio- 

 chem. Syst. Environ. Physiol. 136: 61-66. 



Bech, C. and K. Johansen. 1980. Ventilatory and circulatory responses to 



hyperthermia in the Mute Swan ( Cygnus olor ). J. Exp. Biol. 88: 195-204. 



Beven, G. 1980. Coot feeding on weed disturbed by Mute Swans. Brit. Birds 

 73: 219-220. 



Campbell, W. D. 1980. Posture of Mute Swan. Brit. Birds 73: 218. 



Cobb, J. S. and M. M. Harlin. 1980. Mute Swan ( Cygnus olor ) feeding and ter- 

 ritoriality affects diversity and density of rooted aquatic plants. (Ab- 

 stract only). Am. Zool. 20: 882. 



Eckert, K. R. 1980. Mute Swan influx in the Duluth area. Loon 52: 116-117. 



Krummholz, D. 1980. [Renewed mixed clutches of eggs of Mute Swan, Cygnus olor , 

 and Grey Lag Goose, Anser anser . ] Beitr. Vogelkd. 26: 127. [In German.] 



Reese, J. G. 1980. Demography of European Mute Swans in Chesapeake Bay. Auk 

 97: 449-464. 



Renssen, Th. A. and R. M. Teixeira. 1980. Taxatie van het aantal knobbel- 



zwanen in Nederland. [Appraisal of Mute Swan counts in the Netherlands.] 

 Watervogels 5: 18-24. [In Dutch with English summary.] 



Ruitenbeek, W. 1980. Verschillen tussen aantallen in de zomer en in de winter 

 getelde knobbelzwanen ( Cygnus olor ) in Nederland. [Differences between 

 summer and winter counts of Mute Swans ( Cygnus olor ) in the Netherlands.] 

 Watervogels 5: 25-26. [In Dutch with English summary.] 



1979 



Coleman, A. E. and C. D. T. Minton. 1979. Pairing and breeding of Mute Swans 

 in relation to natal area. Wildfowl 30: 27-30. 



DeJong, R. P. and P. J. Bacon. 1979. Variation in cohesion of a brood of Mute 

 Swans. Wildfowl 30: 86-89. 



Feiler, M. 1979. Zu einingen Problemen der Bestandsentwicklung beim Hocker- 

 schwan ( Cygnus olor ) in der DDR. [On some problems of the population de- 

 velopment of Mute Swans Cygnus olor in G.D.R. ] Beitr. Vogelkd. 25: 27-32. 

 [ In German . ] 



39 



