MEXICO CITY (AP) — The stunning and little-understood annual migration of millions of Monarch butterflies to spend the winter in Mexico is in danger of disappearing, experts said Wednesday, after numbers dropped to their lowest level since record-keeping began in 1993.
Their report blamed the displ...
Hundreds of tundra swans suddenly rose off of a marsh, the strokes of their powerful wings making a whistling sound as they flew.
They landed a short distance away at another marsh, where other tundra swans were gliding over the water like a flotilla of toy sailboats.
Mike Schlepp doesn't know wha...
Humpback whales hold the record for the longest migrations in the mammalian world. Now, researchers have found that the paths they follow on those migrations are astonishingly precise - an observation that raises more questions than answers about how they navigate on their lengthy treks.
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MEXICO CITY (AP) — The stunning and little-understood annual migration of millions of Monarch butterflies to spend the winter in Mexico is in danger of disappearing, experts said Wednesday, after numbers dropped to their lowest level since record-keeping began in 1993.
Their report blamed the displ...
