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Sunday, May 1, 2016

An Egg Oddity: Eggs Without Yolks

This morning my wife cracked an egg, and to her surprise, there was no yolk.  Being a woman with good judgement, she tossed it. Have you ever seen that? (not the woman-with-good-judgment part, the egg am talking about) ... And what are the chances of that? I am curious. The chances of an egg with double yolks are 1 in 1000. So I googled around and found a few entries: Eggs without yolk are called "dwarf" or "wind" eggs. Such an egg is most often a pullet's first effort, produced before her laying mechanism is fully ready. In a mature hen, a wind egg is unlikely, but can occur if a bit of reproductive tissue breaks away, stimulating the egg-producing glands to treat it as a yolk and wrap it in albumen, "membranes and a shell as it travels through the egg tube. This has occurred if, instead of a yolk, the egg contains a small particle of grayish tissue. This type of egg occurs in many varieties of fowl, including chickens (both standard and bantams), guineafowl and Japanese (Coturnix) quail."

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