OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Eastern and western meadowlarks are similar birds but they don’t mate with each other because they use different songs to attract mates. This is:
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behavioral isolation
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temporal isolation
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mechanical isolation
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geographic isolation
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Explanation:
Detailed explanation-1: -The correct answer is: Behavioral isolation.
Detailed explanation-2: -Their mating songs are quite different. The Western meadowlark has a melodious song, whereas the song of the Eastern meadowlark sounds more like a whistle. Even though their ranges overlap in the central United States, they do not interbreed and are two different species.
Detailed explanation-3: -Eastern and Western Meadowlarks are best separated by voice. For silent birds, look for darker head stripes and a mostly white (not yellow), mustache stripe on Eastern. They also show slightly more white in the tail in flight than Western.
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