Western Bonelli's warbler

The Western Bonelli's warbler is a small passerine in the family Sylviidae. Greyish green-brown on the upper side, its very white breast and belly are an identifying feature. It can be differentiated from similar species by its dark legs, its flight feathers and wing coverts edged with yellowish green and its yellowish rump. An insect lover, it is migratory and can be found in the Les Écrins massif and around Serre-Ponçon between April and August.