Why must conservation strategies for the Eastern Kingbird account for habitat health in both North America and the Neotropics?

Answer

The species' long-term viability depends on habitat health across two distinct global regions

The long-term success of the species relies on maintaining healthy habitat conditions in both its temperate North American breeding grounds and its humid tropical wintering lowlands.

Why must conservation strategies for the Eastern Kingbird account for habitat health in both North America and the Neotropics?
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