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Joined: Thu Feb 17, 2005 1:52 pm Posts: 351 Location: mckinney,TEXAS
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My cardinals have started singing so nesting is not too far away. Early to mid-March might be good. Even if a little early in the year, it will give the birds time to find the shells.
Clean the egg shells thoroughly and break the egg shells into small pieces. Heat until the edges just start to turn brown. The time and temp you mentioned is often used.
The cleaning and heat sterilize the egg shells and prevent problems with salmonella.
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