ナショナルジオグラフィックのインスタグラム(natgeo) - 10月23日 04時23分

Wild_life with @bertiegregory | Based on wingspan, the wandering albatross is the biggest bird on the planet. With this giant wingspan of more than 11ft, these birds are able to glide effortlessly over the waves for 1000s of miles in search of food. Scientists put heart rate monitors on albatross to gauge their energy expenditure during different activities. The study found that if the wind direction was favorable for the direction the bird wanted to travel, their heart rate was not much higher than when they’re sat on the water resting. This shows that their 11ft wingspan combined with ultra efficient flying techniques allow flight with very little extra energy cost. Nice one nature. We were lucky enough to encounter this beautiful bird during our 6 day crossing to the Island of South Georgia in the South Atlantic Ocean. // Check out the new season of Wild_Life at natgeo.com/wildlife.

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