How Can You Tell If a Finch Egg Is Fertile?

Answer

Many birds, including Finches, will lay eggs whether they are fertile or not. Once a pair of Finches has mated successfully, the female will begin to lay her eggs in about a week. She will lay one a day for several days. Finches may be unwilling to let you handle their eggs. They may abandon them if you touch them. However, if you are going to incubate the eggs or your birds do not mind you touching them, you can hold a low wattage light up to the egg very carefully to see if it is fertile. A fertile egg will have red veins running in it after 5 days of incubation.
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Q&A Related to "How Can You Tell If a Finch Egg Is Fertile?"
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If an egg has been fertilized,then the embryo inside has already divided several
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