Small warbler, feeds chiefly on insects, especially beetles (Coleoptera); also spiders (Araneae). Nominate troglodytes: continental Europe and Asia Minor; kabylorum: Balearic Islands, S Spain and NW Africa (Morocco to Tunisia); koenigi: Corsica and Sardinia; cypriotes: Crete, Rhodes, Cyprus and Near East. Suitable habitat offered by wide variety of low cover and foraging opportunities. The population is increasing and the status is Least Concern. Migratory (northern populations), partially migratory, and resident.