Abstract
THAT vexata quaestio the migration of birds presents strange anomalies which confound the best informed theories on the subject. Last winter we had a surprise in the appearance in central Italy of the great white-billed diver, Colymbus adamsi, G. R. Gray, two of which were captured, a big ♀ on the Lake Chiusi or Montepulciano on December 2, 1902, and a large-billed ♂ on the 19th of the same month on Lake Trasimeno. Both were, adults in autumn plumage, and are now in the central collection of Italian vertebrata in this museum. It is the first time that this sub-polar and eastern species has been noted in Italy.
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GIGLIOLI, H. Visitors from the High North in Central Italy. Nature 69, 413 (1904). https://doi.org/10.1038/069413b0
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DOI: https://doi.org/10.1038/069413b0
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