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.
Their main prey is rabbit, but they are some of the most ferocious hunters in the bird kingdom and can hunt animals up to three times their own size. They catch and eat the standard small rodents mentioned under prior owls, as well as armadillos, raccoons, bats, weasels, skunks and even porcupines.