Tom Vierus / Fiji bush warbler (Horornis ruficapilla) perched on a vine, Colo-i-Suva Rainforest Park, Viti Levu, Fiji.

Mike Read / Cetti's warbler (Cettia cetti) standing in grass, Ham Wall RSPB Reserve, Somerset, England, UK. March.

David Tipling / Male Cetti's warbler (Cettia cetti) perched on a branch, Lakenheath, Suffolk, UK. May.

Robin Chittenden / Cetti's warbler (Cettia cetti) perched on thorny branch, Thorpe Marshes Norwich UK, April.

Markus Varesvuo / Asian stubtail (Urosphena squameiceps). Happy Island, China. May.

David Tipling / Cetti's warbler (Cettia ceti) Snettisham, Norfolk, autumn

David Tipling / Cetti's warbler (Cettia ceti) Snettisham, Norfolk, England, UK, September.

Staffan Widstrand / Wild Wonders of China / Rufous-faced warbler (Abroscopus albogularis) Lalashan Forest Reserve, Baling, Taiwan

Fabian Muhlberger / Wild Wonders of China / Rufous-faced warbler ( Abroscopus albogularis ) in Bamboo thicket, Taiwan.

Robin Chittenden / Cetti's warbler (Cettia cetti) perched in Alder (Alnus glutinosa) tree. Thorpe Marshes, Norwich, Norfolk, UK. April.

Robin Chittenden / Cetti's warbler (Cettia cetti) male singing, perched in tree. Thorpe Marshes, Norwich, Norfolk, UK. April.

David Perpinan / Cetti's warbler (Cettia cetti) searching for food, Besos river, Barcelona, Spain, March.