Anyone know if they are safe for the greys to eat????

As in Kongs for dogs? If so they are made from a very strong type of rubber and used to put treats inside to keep dogs occupied.  I fill my dogs  with a bit of peanut butter or biscuits etc  - then place in freezer before giving to the dog if I have to go out. Keeps her busy.  I expect you could possibly use same idea for parrots.

 lol think she means the fruit  No idea as I've not used them myself tbh hun x

 pmsl! What are we all like! 

Well something new to me never heard of such a fruit but then I do live in north northumberland!  Though perhaps filled Dog Kongs would keep birds occupied too.