Chris Gomersall / 2020VISION / Dartford warbler (Sylvia undata) adult male perched on flowering Heather / Ling (Calluna vulgaris) on heathland, Suffolk, UK, August. 2020VISION Book Plate.

Ben Hall / 2020VISION / Dartford warbler (Sylvia undata) perched on Heather twig, Arne RSPB reserve, Dorset, UK, July. 2020VISION Book Plate.

Andrew Parkinson / 2020VISION / Whitethroat (Sylvia communis) adult perched in Blackthorn hedgerow with insect prey for young, Hope Farm RSPB reserve, Cambridgeshire, UK, May

Andrew Walmsley / Silver eye / Grey backed white eye (Zosterops lateralis) in flowering Pohutukawa tree (Metrosideros excelsa) Botanic Gardens, Christchurch, South Island, New Zealand, December

Alan Williams / Female blackcap (Sylvia atricapilla) perched in garden shrub, Cheshire, UK, December

Wild Wonders of Europe / Lilja / Cyprus warbler (Sylvia melanothorax) perched singing, Limassol, Northern Cyprus, April 2009

Wild Wonders of Europe / Hamblin / Lesser whitethroat (Sylvia curruca) in breeding plumage, perched on Cow parsely (Anthriscus sylvetris) Nemunas Regional Reserve, Lithuania, June 2009

Alan Williams / Whitethroat (Sylvia communis) male singing perched on Blackthorn (Prunus spinosa) blossom, Essex, UK, May

Alan Williams / Male Blackcap (Sylvia atricapilla) singing in woodland, Essex, UK, April

Colin Varndell / Dartford warbler on gorse {Sylvia undata} UK.

Colin Varndell / Dartford warbler singing {Sylvia undata} UK.

Rolf Nussbaumer / Garden warbler {Sylvia borin} on elderflower, Switzerland.