In North America,many Kinds of Birds Have Closely Related Eastern

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The Answer is Since the species produce hybrid offspring,the best way to determine whether the birds are a single species is to determine whether the hybrid offspring are capable of surviving to adulthood and producing offspring of their own.If the birds are subspecies within the same species,then their offspring should be able to survive to adulthood and produce offspring with other eastern,western,or hybrid birds.If the birds are two closely related but separate species,then the hybrid offspring would probably not be successful in developing to adulthood and/or producing their own offspring.You could also determine whether the hybrids are very common in the area where the eastern and western ranges overlap.If the birds are members of the same species,then hybrids would be common in the range of overlap,and birds would not appear to have a mating preference for their own kind.If the birds are separate species,then hybrids would be rare,and birds would appear to prefer to mate with their own kind rather than mate with their geographic counterpart.

In North America,many Kinds of Birds Have Closely Related Eastern

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In North America,many Kinds of Birds Have Closely Related Eastern

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Correct Answer:
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