The greater blue-eared starling are gregarious birds that can gather in very large flocks and roosts, often mixed with several other starling species. They will forage either in trees or on the ground, and tipically prefer to walk rather than hop when foraging. They will even land directly on grazing animals to pick away at insects and parasites.
This bird nests in holes in trees, either natural or excavated by woodpeckers or barbets. It will also nest inside the large stick nests of the sacred ibis or Abdim's stork. A nest will include 3 to 5 eggs, which are usually greenish-blue with brown or purple spots. this species is parasitised by the great spotted cuckoo and occasionally by the greater honeyguide.