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Name: Didi K.
Status: other
Age: 12
Location: N/A
Country: N/A
Date: 2/23/2003

What is the weight of an egg, when it is laid, until it hatches, or is there no change?

The Audubon Society Encyclopedia of North American Birds, edited by John Terres, has an extensive discussion of eggs, egg laying and embryo development, including a table of weights of some bird's eggs, and a very good set of diagrams and discussion of the changes inside the egg during development, but does not give the details of weight change during development. That is the best reference I have.

J. Elliott

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