- 1930 - 1939
Manuscript chronicling the failure of introducing two male swans to two female swans who had been companions for a few years. The author points out that partners should be introduced in the first two years of life as swans mate for life. After such a long period of association, the two birds became dependent upon each other for all types of companionship long before the males were introduced.
Finley, William L. (William Lovell), 1876-1953