Gap Fill - Flamingos - Level 2


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   bones      difficult      energy      hips      hour      how      image      long      many      muscles      natural      other      reason      scientists      skeleton      still      straight      this      time      unique  
Scientists think they have found flamingos stand on one leg. We all love the of these beautiful birds doing . The why the birds do this has always puzzled . Researchers in the USA say they have found this secret of the world. A professor says a flamingo can stand on one leg for many hours because of its . The flamingo's and leg bones are in a special position that gives the bird great balance. The professor said the flamingo's help it to stand on one leg. Flamingos do not have to use their a lot to do this.

Another researcher said the flamingo is because it can stand still for a time on one leg. It is very for a human to stay , even for an . The researcher said most of us don't know that we're moving all the . Even when we stand still, our muscles always work to keep us so we don't fall over. The position of the bones in a flamingo means the birds do not need to use so muscles to keep still. They can save . The researchers say that saving energy could be the reason why birds also stand on one leg.

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