Evans, M. E. 1979c. The effects of weather on the wintering of Bewick's Swans 

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Hussong, D. , J. M. Daraare , R. J. Lirapert, J. L. Sladen, R. M. Weiner and R. R. 

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1978 



Evans, M. E. 1978. Some factors influencing the use of a wintering site by 



Bewick's Swans, studies through individual recognition. M.S. thesis, Univ. 

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Evans, M. E. and J. Kear . 1978. Weights and measurements of Bewick's Swans 

 during winter. Wildfowl 29: 118-122. 



Kappa, B. 1978. Whistling Swan in Sullivan County. Migrant 49: 82. 



Lina, P. H. C. and H. D. Van der Laan. 1978. Waarneraing van een Kleine Zwaan 

 Cygnus bewickii met rode poten. [Observation of a Bewick's Swan Cygnus 

 bewickii with red legs.] Limosa 51: 167. [In Dutch.] 



Seegar, W. S. 1978. Prevalence of heartworm, Sarconema eurycerca , Wehr , 1939, 

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Scott, D. K. 1978. Social behaviour of wintering Bewick's Swans. Ph.D. the- 

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1977 



Brown, J. and V. Lewis. 1977. A laboratory study of individual recognition 

 using Bewick's Swan bill patterns. Wildfowl 28: 159-162. 



Evans, M. E. 1977a. Notes on the breeding behaviour of captive Whistling 

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. 1977b. Recognizing individual Bewick's Swans by bill pattern. Wild- 

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Gaul, R. W. 1977. Aphrodite's Ghost. The Swan in North Carolina. Conclusion. 

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Merne, 0. J. 1977. The changing status and distribution of the Bewick's Swan 

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