 Brolgas here preferentially use two grassland-dominated regional ecosystems (2.3.1 and 2.3.4), though over 30% of the cranes share four additional "Eucalyptus"-dominated woodland regional ecosystems with sarus cranes.Brolga numbers were highest in floodplains where grassland habitats dominated, and the largest flocks were also found in grassland habitats.Brolgas' social unit is very similar to that observed in sarus cranes.