Delegates at a global wildlife conference on Sunday voted to ban international trade in African grey parrots, one of the world’s most trafficked birds. Prized for their ability to mimic human speech, the birds are a highly sought-after pet, but their numbers have been decimated in recent years by poaching and the destruction of their forest habitats. The Convention on International Trade in Endangered Species (CITES) meeting in Johannesburg voted 95 to 35 in a…