Irenids occur throughout the Oriental zoogeographical realm. Each of the three genera is represented by at least one species of very wide zoogeographical range, including the Indian subcontinent, southern China, Indochina, the Malay

Peninsula, and the Greater Sundas. Each also includes species of far more limited distribution. Examples are Marshall's iora (Aegithina nigrolutea), found only in tropical Pakistan and northwestern India, and the yellow-throated leafbird (Chlorop-sis palawanensis), confined to the western Philippine island of Palawan, and some of its tiny satellites. The Philippines represent the eastern boundry of all three genera's range, and none occur in the Lesser Sundas.

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