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.
Manuscript that marvels at how birds adapt and seem to remember their environment. Author remarks on the difference in behavior of birds when they perceive danger.
