What is the typical residency status of Northern Mockingbirds found in the colder, northernmost reaches of their range?

Answer

Migratory, moving south for the winter

Individuals located in the colder, northernmost parts of their distribution, such as Southern Canada and the Northern US, typically migrate south when winter approaches.

What is the typical residency status of Northern Mockingbirds found in the colder, northernmost reaches of their range?
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