McDonald's Corp. and Target said Friday that they had booted a Minnesota-based egg supplier in the wake of an undercover video documenting alleged animal abuse. The hidden-camera video was shot by the Chicago animal rights group Mercy for Animals at facilities of Sparboe Farms, the nation's fifth-largest egg producer. Taken in Minnesota, Iowa and Colorado, the video portrays crowded cages common in the egg industry, but also shows one worker swinging a chicken by a rope or chain and another stuffing a hen in a co-worker's pants pocket. Sparboe was also cited this week by federal food regulators for serious...