There are over twice as many chickens on Earth as there are people, with 15.9 billion in 2002 and 7 billion people in 2010.
There are more chickens on the planet than there are people. In fact, the number of chickens in 2002 is more than double the number of people in 2010. In 2002, 15.9 billion chickens scratched the Earth versus about 7 billion in 2010.
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