Molecular analysis of the eggshell structure of large flightless birds such as ostriches and emus provides new insights into how they evolved. The study, published today in eLife, demonstrates that ...

Over their short lifetimes though, bird eggshells change their strength. For example, they get thinner and weaker before hatching begins. Now, researchers investigating eggshell structure have zeroed ...

The calcitic layers of the eggshells of archosaurs (including crocodilians and birds) and turtles are composed of distinctive crystalline structures known as eggshell units. Those growing from the ...