There is no way to check right now, but there are warning signs. If it doesn't have the Kalos Pentagon, then it comes from an older game, where it was easy to hack Pokemon. If it has a big series of max IVs, it's probably hacked (ie a 6IV Metagross or a 5IV Latias).
Tufted Titmouse are regulars at backyard bird feeders, especially in winter. They prefer sunflower seeds but will eat suet, peanuts, and other seeds as well. Find out more about what this bird likes to eat and what feeder is best by using the Project FeederWatch Common Feeder Birds bird list.
What do Opossums Eat? As opportunistic scavengers, opossums will feast on a wide variety of foodstuffs. Their omnivorous diet includes insects, small rodents, frogs, birds, and berries. In residential neighborhoods, opossums forage for vegetables, fruits, garbage, bird seed, and pet food. Fresh meat and roadkill are also dietary staples. The opossum diet changes slightly depending on the season. For example, the pests eat a lot of insects in the summer while they mostly consume small mammals in the winter. Opossums depend on smell and touch to find meals.