Iowa is in danger of losing its leading egg production title as the highly pathogenic avian influenza outbreak continues to take its toll on the state’s poultry industry.Egg production during June was 763 million eggs, down 26 percent from 1.02 billion eggs in May, and down 44 percent from 1.4 billion eggs in June 2014, according to the latest Chickens and Eggs report from the U.S.