How Many Millions of Years Has It Been Since They've Been Here?

Migratory shore birds that come to southernt willa, come to all over australia. Most other migratory er animals are migrating to retain a constant environment. At winter s, we need to go somewhere wek oter be. We go on and continuas summer. An wonder how an tham come from. How many millions of years it's been since they've seen winter? Exactly thet's just constantly ain sumter the they've in this particular case.

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