African Collared Dove Streptopelia roseogrisea male at Pinar de la Algaida, Sanlucar de Barrameda, Cadiz, S Spain on 15.5.2011.
Fotos: Hannu Koskinen

Found by characteristic song.

Paler and more slender structure than Collared Dove S. decaocto. Especially lower belly and undertail whitish, see below.
Note also darker grey rump, which is just barely visible in this photo (and upperside of tail, not visible).

No rings!

Collared Dove S. decaocto male at Guadalmar, Malaga, Spain on 21.5.2011. Foto: Hannu Koskinen
Note the difference of underpart colouration.

Collared Dove S. decaocto male at Starigrad, Croatia on 24.6.2009. Foto: Hannu Koskinen