McDonald's USA and Canada to Source 100 Percent Cage-Free Eggs Within 10 Years OAK BROOK, IL, 2015-9-9 — /EPR Retail News/ — To meet consumers' changing expectations and preferences, McDonald's (NYSE: MCD) today announced that it will fully transition to cage-free eggs for its nearly 16,000 restaurants in the U.S. and Canada over the next 10 years. "Our…