Cetti's warbler

A dark, stocky warbler, the Cetti's warbler is most likely to be heard, rather than seen - listen out for its bubbling song among willow, marsh and nettles.

Species information

Statistics

Length: 14cm
Wingspan: 17cm
Weight: 12-15g
Average lifespan: 2 years

Conservation status

Classified in the UK as Green under the Birds of Conservation Concern 5: the Red List for Birds (2021). Protected in the UK under the Wildlife and Countryside Act, 1981.

When to see

January to December

About

Named after 18th century zoologist, Francesco Cetti, the Cetti's warbler is a medium-sized warbler of willow scrub, marshes and nettlebeds. It can be very difficult to spot, but you may well hear it singing loudly from the cover of dense bushes. Resident all year-round, in summer, male Cetti's warblers spend their time defending territories, while the females lay their bright red eggs and raise their chicks.

How to identify

Cetti's warblers are rich chestnut-brown above and grey below, with a pale throat. They have a long, often cocked, tail. Best recognised by their explosive song.