Difference between a fertilised and unfertilised chicken egg

This is not a scientific explanation of yolk development into an embryo chick moreover its a lay observation by me about the size of the membrane coming off the .
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Difference between fertilized and unfertilized eggs . , . . . . Whats the difference between fertilized and unfertilized eggs chowhound whats the difference .
The difference between Fertilized and Unfertilized Eggs. Do you need a rooster to get eggs from your hens? This presentation contains .