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What do you wonder?
  • Tell a partner what you observed.
  • What do you wonder about the way cranes walk?
What scientists wondered:

  • Scientists wondered why cranes seem to bob their heads when they walk!

  • They noticed that the birds first thrust their long necks and heads out. Then they held them still while they stepped forward.

  • The scientists had this hypothesis: When cranes keep their heads still, their eyes can focus on details and pinpoint food.

  • They knew from other research that when a bird's head moves forward, it jerks. That makes details look blurry, but it helps a bird to judge distance.

Next: Try walking like a crane . . .



Photo: Whooping Crane Eastern Partnership