Atypically pigmented Aquatic Warbler was caught at Trunvel ringing station, Brittany, west France, on 23th August. This phenomena in called leucism – reduced pigmentation in animals. Unlike albinism, it is caused by a reduction in all types of skin pigment, not just melanin. There are lots of examples of leucism among birds, but it is the first registration of the Aquatic Warbler with reduced pigmentation.
Photo: Thomas Biteau
For more information contact: Arnaud Le Nevé,