Terns flee warming temperatures in epic migration north to Alaska

Researchers on north-west coast of Alaska startled to discover Caspian terns an incredible 1,000 miles further north than species had been previously recordedEyebrows would be raised if American crocodiles, found on the southern tip of Florida, decided to relocate to New York’s Fifth Avenue or Moroccan camels suddenly joined the tourist throng outside Buckingham Palace in London. Yet this is the scale of species shift that appears to be under way in Alaska.
In July, researchers in Cape Kru