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What is strange about this bird's migratory habits?

Answer:

This is a happy, relaxed Blue Jay. Because it is happy and relaxed, its crest is down. Blue Jay migration is one of the many mysteries in science. Sometimes they migrate, sometimes they don't. In the same area, some birds will migrate, while others will remain, and the same bird may migrate one year and stay another. No one has found any evidence that would indicate if and why they migrate. That is part of the fun of science!
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