The restaurant chain, which serves breakfast all day, said it was adding the temporary 50-cent surcharge because the bird flu has caused a shortage in the egg supply. Eggs, Waffle House, Restaurants, Shortages, Fast Food Industry, Avian Influenza, Birds, United States The restaurant chain, which serves breakfast all day, said it was adding the temporary 50-cent surcharge because the bird flu has caused a shortage in the egg supply. NYT > Business