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.
Give them raisins in moderation. They can eat canned fruits and veggies. Cut them up into tiny pieces so your parakeet can eat them easily. Your parakeet can also eat corn, peas, carrots, apples, cooked pasta and rice, hard boiled eggs, peas, broccoli, yams, sweet potatoes, cantaloupe.