Abstract
THE migration of birds remains one of the most tangled problems, as it is one of the greatest marvels of the zoologist's world. In the old days known facts were few and hypotheses were correspondingly simple (and as a rule erroneous), but with multiplicity of data, theories, guesses and suggestions have so increased in number and complexity that they form in themselves a new problem for the seeker after truth. In the matter of precision of data the present generation holds a great advantage over its predecessors.
Die Rätzel des Vogehuges. Ihre Lösung auf experimentellem Wege durch Aeronautik, Aviatik und Vogelberingung.
Von F. von Lucanus. Pp. viii + 226. (Langensalza: H. Beyer und Söhne (Beyer und Mann), 1922.) 30 marks.
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RITCHIE, J. Die Rätzel des Vogehuges Ihre Lösung auf experimentellem Wege durch Aeronautik, Aviatik und Vogelberingung . Nature 109, 573 (1922). https://doi.org/10.1038/109573a0
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DOI: https://doi.org/10.1038/109573a0