In which Canadian province is the city of Ottawa located?   Ottawa is in the province of Ontario. For more information on the various provinces of Canada, see the Related Link to the website of the Government of Canada.
Wild cockatoos enjoy eating & shredding the leaves, nuts, flowers & branches of the She-Oak. Brush Ironbark/Hickory Wattle Ironbark tree is from the Eucalyptus family and is safe for parrots. Brush Ironbark Wattle or Hickory Wattle is a type of Acacia, but it is also a type of Myrtle and toxic to parrots.
Alright - a bit more further reading around. Eucalyptus can be toxic to mammals - which is one of the theories for how it ends up on the 'toxic' list for birds. (Sometimes, people borrow toxic lists for cats/dogs and also apply them to birds as there are some overlaps - e.g. chocolate, coffee, etc)