Breeding season: July to February. Clutch size is two to three. They live and breed in co-operative territorial groups of two to fifteen birds. Groups usually have a primary breeding pair along with several non-breeding birds. They help to build the nest (females do most of the building). Two types of nests are built: roost-nests (usually larger and used by the whole group) and brood-nests (for the breeding females). The large domed nests are placed in a tree fork 4-7 m high, made of thick sticks with projections that make a hood and landing platform for the entrance tunnel.