There are at least 10 subspecies in the Western Palearctic region and I believe the first photo to be the Motacilla flava iberiae subspecies with its narrow white supercilium and its white throat. The Camargue is a bit too far east for this to be certain and it may be an intergrade between M. f. iberiae and M. f. flava.

It is distributed across most of the northern hemisphere apart from North America east of Alaska and most populations migrate south in the winter to sub-Saharan Africa, India, south-east Asia and Australia. See the distribution map at Birdlife International.