Dong Lei / Chestnut-headed Tesia (Tesia castaneocoronata) perched, Sichuan Province, China.

David Tipling / Cetti's warbler (Cettia cetti) Northern Israel, January

Robin Chittenden / Spectacled warbler (Sylvia conspicillata orbitalis), male perched in shrub, Fuerteventura, Canary Islands, Spain. February.

John Waters / Cetti's Warbler (Cettia cetti) singing in reeds at dawn, Ham Wall RSPB Reserve, Somerset Levels, England, UK, December.

Andy Sands / Dartford warbler (Sylvia undata) perched on Gorse bush, Hampshire, England, UK, May

Andy Sands / Dartford warbler (Sylvia undata) singing from Gorse bush, Hampshire, England, UK, May

Nick Upton / Dartford warbler (Sylvia undata) female peering from a dead Gorse bush, Bicton Common, Exmouth, Devon, UK, June.

Dong Lei / Chestnut-crowned bush-warbler (Cettia major) perched, Mount Namjagbarwa, Yarlung Zangbo Grand Canyon National Park, Tibet, China.

David Tipling / Dartford warbler (Sylvia undata) in Gorse bush, Norfolk, UK, May.

Markus Varesvuo / Tristram's Warbler (Sylvia deserticola) perched in bush, Morocco, March

Dong Lei / Yellowish-bellied Bush Warbler (Cettia acanthizoides) Tangjiahe National Nature Reserve, Sichuan Province, China, Asia

Aflo / Bush Warbler (Cettia diphone) profile, Tokyo, Japan, January.