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.
American martens eat mostly meat. They are willing to eat any animal they can catch. Most of the time, they catch squirrels and micebut can sometimes eat birds, fruit, nuts, insects, and carrion. American martens kill their prey with a quick, powerful bite to the back of the prey animal's neck.