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.
The Titmouse is only distantly related to the Tits and/or Chickadees but is not in the same genus, although it once was. According to The Dictionary of American Bird Names by E. Choate, Titmouse is derived from the Anglo-Saxon masse meaning small bird as does the word tit which means little or small.'d agree with Keith as Titmice just doesn't ring right somehow and puts the emphasis more on Mice than the intended flock of Birds. Though with Canada Geese it's a different thing, to my mind, Geese is what I always use and what sounds right, Canada Goose for plural just doesn't sound right.