Timing is best when handing over the treats immediately.
Why ask when or if? I have to ask why you are taking the time to discuss this matter in the first place. It would be a lot easier if you ate healthy foods around parrots, that way, when it's time to share, you don't have to concern yourself with deciding on the sharing part. Of course you'll share, it's good foods for everybody's face.
Author
Felix LaFollett
I am an extraordinary Congo African Grey living an ordinary life with subtitles. I hatched in 1993. As Parrot Ambassador to the Parrot Curious and Parrot flock members, it's my job to show you what it's like to share your life with a parrot.