Well, my 4 1/2 year old budgie has always been good, and I've never been able to reward her with treats, only verbal praise. If i tried to give her a treat by putting it near her beak, she always drops it. What should i do?
Also, maybe try a smaller treat. I use a hulled sunflower seed, a pine nut, or a hulled pumpkin seed. Hold it between your fingers so the bird can see it. It will nibble it from your fingers. Or put it on your open flat palm, and let the bird take it.