Ornithologists Visiting an Island Find Two Species of Birds That

question 76

Multiple Choice

Ornithologists visiting an island find two species of birds that appear nearly identical except for bill size. Which of the following is the most likely explanation for their discovery?

• A) They are not separate species.
• B) The birds need camouflage for protection from predators.
• C) There is natural random variability.
• D) Coevolution of the two species has resulted in resource partitioning between the species.
• E) Mutations have resulted in an inferior species with defective bills.

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