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

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

Ralph Martin/ BIA / Spectacled Warbler (Sylvia conspicillata) male calling, Morocco

David Tipling / Spectacled warbler (Sylvia conspicillata) perched, Gun Hill, Burnham Overy dunes, Norfolk, UK, June.

David Tipling / Spectacled warbler (Sylvia conspicillata) perched, Gun Hill, Burnham Overy dunes, Norfolk, UK, June.

David Tipling / Spectacled warbler (Sylvia conspicillata) perched, Gun Hill, Burnham Overy dunes, Norfolk, UK, June.

Mathias Schaef / Spectacled Warbler (Sylvia conspicillata) male calling, Spain

Ralph Martin / Spectacled Warbler (Sylvia conspicillata) male, Cyprus

Jose B. Ruiz / Spectacled warbler with insect prey {Sylvia conspicillata} Spain

David Cottridge / Spectacled warbler (Sylvia conspicillata) perched on bramble, Majorca, Balearic Islands, Spain

Jose B. Ruiz / Spectacled warbler {Sylvia conspicillata} removing fecal sac from nest, Spain

Robin Chittenden / Spectacled warbler (Sylvia conspicillata) Norfolk, England, UK, June.