What can’t conures eat?

Coffee, chocolate and avocado are the three notable exceptions. These are toxic to conures.
Avocados have a toxin in the bark, leaves, skin and pit that is highly poisonous to not only conures (green cheek or otherwise) but all birds and can even cause a reaction in dogs, cats and other animals. The flesh is probably safe, but it is so easy to avoid that most vets will advise you not to take any chances.

Coffee, chocolate and other highly caffeinated foods need to be avoided. Birds already have a very rapid heartbeat and caffeine speeds that up.

Jasper absolutely loves coffee and will do almost anything to get some. I now drink my morning coffee out of a travel mug. He still gets a small amount of coffee from licking at the rim and such, but it’s just barely enough to get a taste and not enough to be a “dose”. While this, for us, has become a rule that we do tend to bend we are still very careful that his exposure to caffeine is minimal. We have found that a drop (literally one drop) of coffee, or cola in the bottom of a mug will keep him happy as the shape of his beak and the effort required to get to it makes it a fun, long lasting game for him that does not give him enough to be harmful.

Apple seeds deserve a special mention as the seed contains cyanide. It’s not enough to harm you or I, but letting your bird eat them is a definite no-no. It’s usually recommended that you avoid seeds altogether and just give them the same parts of a fruit that you would eat for yourself. We tend to stick with that, as it gives us less to remember and it’s not difficult to slice off a little bit of whatever I’m currently munching on.