Purple-crowned Fairy-wrens are heterotrophs and consumers in their local food webs. They are also insectivores and eat beetles, ants, bugs, wasps, grasshoppers, moths, larvae, and spiders (Boekel 1979; Hall 1902; Mathews 1918; Rowley & Russell 1993; van Doorn 2006). The species can also feed on leaf material (Hall 1902) and some seeds (Schodde 1982). Individuals look for insects in Pandanus, canegrass, herbs, shrubs, trees, and grasslands. They can capture insects while flying in the air, hopping on the ground, and moving through vegetation quickly. They often hop quickly on the ground looking for food around leaf litter, roots, and boles of Pandanus. They move quickly in vegetation or Pandanus leaves that may have accumulated as debris during floods (Boekel 1979; Rowley & Russell 1993).
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