When not nesting, ioras and fairy bluebirds roam the forest in flocks, generally in association with other species. Fairy bluebirds are often found in the company of feeding fruit pigeons, hornbills, bulbuls, and others. Ioras are generally associated with species of similar sized insect-eaters. Leafbirds are likewise nomadic outside the breeding season, but are generally in smaller numbers, or pairs, and are noted for frequent aggression towards other birds. All three genera are known for tuneful songs. Leafbirds are excellent natural mimics of other species. All of these birds form pairs that remain monogamous during the breeding season, and then become territorial.
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