The treat that works best depends on your bird, I recommend buying usual bird favorites to start (those being things like papaya bits, sunflower seeds (unsalted), and things like that). I did this with my two green cheeks, and I let them eat each of them, then threw them all in my hand and showed them it, and they chose the one they liked the most. I usually then figure out what their favorites are in order, so my bird Rascal had a choice between yogurt bits, papaya, seeds, and pumpkin seeds, he chose papaya #1, then seeds, then pumpkin, then yogurt. So, i usually use seeds, and when he does amazing and is catching on fast, and i give him a little boost by giving his favorite treat, a papaya bit. Hope this helps.