Concluding remarks

The study of bird migration is a truly interdisciplinary research effort including ideas and techniques from many different disciplines. It requires both theoretical and experimental development and a great challenge for new students. We now understand a great deal about the evolution and ecology of migration, but there are still many mysteries awaiting solution. These problems can be tackled either in the laboratory or in the field.

Acknowledgements

We are very grateful to R. Green, I. Newton, and W. Sutherland for comments on the manuscript.

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