A conure (I have gccs) will try to eat and drink anything you happen to be holding. If for no other reason than he doesn't have any and YOU DO have it. The main thing is to remember the foods that will kill your bird pretty quickly and keep your fid out of them. Onion, avocado, chocolate, caffeine are the ones that come to mind immediately. Birds will get into anything they can, just like a toddler with a fork trying to check out the electrical outlets.Its kind of like a salami, google it if you need to. My Black capped conure, Yuuki, snagged a beak full of my sandwich cracker, will that hurt him? he seemed to like it. Could he have more in moderation?
But, I'm hoping that one brat fid sneaking a nibble isn't a death decree. That doesn't mean that your fid should be eating it - you'll have to cover human foods that are poisonous with a plate or cover so that the little monkey can't get into it.It's good stuff but I don't think I'd share with the birds though.