What lies behind an egg's shape?

How do birds end up with differently-shaped eggs?
29 June 2017
Presented by Katie Haylor

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Many of us enjoy a boiled egg or two for breakfast, but why are hens' eggs round at one end and pointed at the other? Katie Haylor caught up with Mary Stoddard, from Princeton University, who's been trying to find out why eggs look the way they do...

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