Which Bird Species Did Ornithologist John Audubon Observe in the Early

question 71

Multiple Choice

Which bird species did ornithologist John Audubon observe in the early 1800s in a flock that he estimated was 16 kilometres wide and hundreds of kilometres long and consisted of perhaps a billion birds? 

• A) Carolina parakeets 
• B) sparrows 
• C) starlings 
• D) passenger pigeons

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