November 2018

The Evolution of Migration

The following is excerpted from my book, Beaks, Bones, and Bird Songs. Migration is dangerous but it must be advantageous for long term survival. Determining how the physical and physiological characteristics of organisms developed over geological time is difficult as the fossil record is incomplete and the fossils themselves often lend themselves to debatable interpretations. …

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Chickens

Each American consumes the equivalent of 27 chickens per year, not counting eggs. The U.K. raises 870 million chickens and imports another 400 million each year. And no wonder, chickens are tasty. The domestic chicken came from the Red Junglefowl of Asia.  Domestication occurred at least 7000 years ago in China and maybe as far …

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