Species that feed predominately on vegetable matter in the non-breeding season feed in flocks to do so, whereas those that feed on animals usually feed in family groups, joining flocks only during resting periods, or in preparation for travel during migration.
As especies que se alimentan predominantemente de materia vexetal na estación non reprodutora xúntanse en bandadas para facelo, mentres que as que se alimentan de animais normalmente aliméntanse en grupos familiares, xuntándose en bandadas só durante os períodos de descanso, ou para preparar as viaxes migratorias.