Attenborough's Wonder of Eggs

David Attenborough explores his passion for birds' eggs. These remarkable structures nurture new life, protecting it from the outside world at the same time as allowing it to breathe. They are strong enough to withstand the full weight of an incubating parent and weak enough to allow a chick to break free. How is an egg made? Why are they the shape they are?

Category

Documentary / Animals / Nature / Special

Original air date

31/03/2018