Have you got an idea of what energy comes in he food that birds eat

Question: Have you got an idea of what energy comes in he food that birds eat
- Keywords:
  bird,
  energy,
  food
Asked by Kai A to Alex on 13 Mar 2017. This question was also asked by x_Jess_x.
- Alex Evans answered on 13 Mar 2017:
  
  Yes! The amount of calories in food is the amount of energy it contains.
  
  We measure how much energy is used up by a bird to fly by measuring its breathing, as birds need to consume oxygen in order to turn the energy they’ve gotten from the food into power to move their wings!

Question: Have you got an idea of what energy comes in he food that birds eat