Mating season starts in April. To attract mates, they hop about on the branches of trees, and on the ground. They chase each other, posture and raise and lower their head and tail feathers. The nests are large, usually built in a tall hedge or thorn bush, with a domed top. 5-6 eggs are laid.
Breeding takes place all year long, although mainly during the summer.
The kea makes its nests under boulders, in a crevice, in the roots of a tree, or in a hollow log. The beech reproduces sexually. There are separate male and female trees. The male produces a flower that looks like a globe shaped head, and the female produces a flower that has short erect spikes. It produces a triangular eatable nut.