Sony Dong, 46, of Garden Grove, was also ordered to pay $4,000 in restitution to federal authorities who are caring for the birds. Dong came under investigation in December 2008 when customs inspectors at Los Angeles International Airport found an abandoned piece of luggage that contained 18 birds, five of which were dead, and determined that he had checked it while boarding a flight in Vietnam. In April 2009, customs officials determined that Dong was scheduled to fly from Vietnam and arrive at LAX. They conducted an inspection and saw bird droppings on his socks and feathers peeking out from under his pants. Fourteen live birds were found attached to pieces of cloth wrapped around his calves. When officials served a search warrant at Dong's home, they found 51 additional songbirds. Assistant US Attorney Mark A. Williams said a songbird sells between $800 and $1,000 on the black market. Williams said the birds, which are in quarantine, will be donated to zoos and aviaries.