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Spring Change and Hummingbird Migrations Satellite Map Gives Clues This satellite image shows the Eastern United States in April. (The state borders were put in.) No, the red dots aren't hummingbirds; they're fires! But something here does give us a clue about the Ruby-throated hummingbird migration. Look closely at the image. Compare it to today's migration map. Journal Questions: What similarities do you notice? What does this "tell" you about hummingbird migration? What does it say about hummingbirds' basic needs? This Season Teachers Kids Orientation Registration Search Copyright 1997-2008 Journey North. All Rights Reserved. Questions or comments? Contact us.