Cataloging products according to the "species of parrot" or its size is a mistake. The most enriching thing for them, from a macaw to a lovebird, is to provide a variety of thicknesses in their space. From thinner branches to encourage the grip and grip of their paws, to thick branches to serve as a perch so they can rest. So the most beneficial thing for them is to have variety and different types of thicknesses :)