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.
Found foraging in trees, often with flocks of chickadees, most Tufted Titmice live their entire life within a few miles of their birthplace. Tufted Titmouse Baeolophus bicolor. Both males and females have white undersides, gray backs, rusty-brown sides, pointed crests on their heads, and large dark eyes. The Tufted Titmouse is very appealing visitor to the feeder. They are attracted mainly to feeders that offer nuts or sunflower seeds.