Avian Egg

Marvels of Eggshell Pigmentation: Why Eggshells Vary so Greatly in Color and Pattern

In contrast to their closest modern relatives, the family Crocodylinae, avian eggs dramatically range in egg size, shape and color. Primarily for protection from predators, many bird species have evolved unique phenotypes including colored shell markings that represent a novel development in the phylum Chordata’s gene pool. Selection for egg…

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Mechanical and Material Design Principles of the Avian Egg Shell

The design of the avian egg presents intricacies ranging from its mechanically durable architecture to its composition of bacterial protective materials. Characteristics such as the function, architecture, operation, and eggshell vulnerabilities are presented to outline the success of embryo survival and chick pipping. Protection against various external conditions and the…

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