10,000 Birds
MARCH 3, 2020
This is more than eBird reports–a checklist generated from the citizen science database lists only 1,413 species. The guide covers 1,433 species, the number of birds documented at the end of 2014, the cutoff point for the book. Clearly, this is an under-birded country. .
10,000 Birds
MAY 19, 2011
Another question this raises has to do with migration itself. Annals of the New York Academy of Sciences, 1046 (1), 282-293 DOI: 10.1196/annals.1343.026 Those two questions are not mutually exclusive. Why migrate? In the words of the famous bird migration expert, Thomas Alerstam, birds migrate because the earth is tilted. 2 PIERSMA, T.,
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