While you sleep, scientists will use a space telescope to spy on migrating birds


sunset birds migrating
Animals

Scientists are on the brink of learning the details of where they go and why.

At the end of April, or when spring starts to thaw, a great migration north begins. Thousands upon thousands of songbirds make the trek, but you won’t see most of them.
via Popular Science "https://ift.tt/2KGTTMI"

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