The Great Migration Every year hundreds of birds, mammals, and insects par take in a roundtrip journey to find a warmer climate, a better reproductive environment, and more food. Three species in particular that make this migration every year are the golden cheeked warbler, the whooping crane, and the monarch butterfly. Also, scientists believe they have figured out why these animals never wander off course or get lost. Scientists have carefully tracked several species to …showed first 75 words of 915 total…

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