Their diet is largely insectivorous, though several species also eat fruit extensively, mainly small berries such as elder and ivy, particularly from late summer to late winter; one species (Blackcap) also frequently takes a wide variety of human-provided foods on birdtables in winter.
Old World warbler | Cetti's Warbler | Warbler | Wood Warbler | warbler | New World warbler | Subalpine Warbler | Great Reed Warbler | Garden Warbler | Sedge Warbler | golden-cheeked warbler | Cerulean Warbler | wood warbler | Wilson's Warbler | Willow Warbler | willow warbler | Whistler's Warbler | Typical warbler | The Yule Brook Botany Reserve, showing fenceline, fire break, and typical vegetation, including ''Actinostrobus pyramidalis | Swainson's Warbler | Seychelles Warbler | sedge warbler | Rubeho Warbler | River Warbler | Prothonotary Warbler | prothonotary warbler | Orphean Warbler | Orange-crowned Warbler | Ménétries's Warbler | Japanese Bush Warbler |
A supposed Sylvia warbler fossil from the late Gelasian of Bad Deutsch-Altenburg (Austria), about 2 Ma old, may be of a Luscinia instead; due to its recent age it probably belongs to a living species or its immediate ancestor.