In 1998 the American Ornithologists' Union chose to treat the thrushes as a separate family in the seventh edition of their Check-list of North American birds and subsequently most authors have followed their example.
En 1998 a Unión de Ornitólogos Americana decidiu tratar os tordos como unha familia separada na sétima edición da súa Check-list of North American birds e posteriormente moitos autores seguiron o seu exemplo.