Warblers are so called because of their varied songs.

These small, very active birds are mainly insectivorous but also eat seasonal berries and seeds. Most species migrate to warmer climates to over-winter and warbler species make up a significant proportion of the passage migrants moving through Shetland in autumn.

The warblers which breed in the UK can be divided into four general groups, leaf (Phylloscopus), grasshopper (Locustella), garden (Sylvia) and reed (Acrocephalus). Each group has different habitat and feeding preferences.