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Photo © Keith Williams
Photo © Ian Stewart

What Loses Weight While Growing?

Did you know that as an embryo grows within an egg, the egg actually loses weight? Why? The egg loses water through its shell constantly throughout the incubation process. A typical egg loses about 18% of its initial weight during incubation, regardless of its size and incubation period. If only it were as easy as breathing for the rest of us.

Cornell Lab of Ornithology

Cornell Lab of Ornithology