Aafrika ja Aasia suured siniraalised, peamiselt metsalinnud. Pikkus 38–165 cm, saba pikk, hiiglaslik nokk paljudel mitmevärviline ja väljakasvetega. Enamasti vilitoidulised. Pesitsevad puuõõnsustes.
a family of medium to large, typically black and white birds that have huge, curved, red or yellow bills, a casque on the culmen, short legs, and a long tail
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There are 13 genera, with 59 species, found in Africa, southern Asia, Malaysia, the Philippines, Indonesia, and the Solomons.
