Marais de Kersahu

Morbihan, Bretagne  >  France

Former salt marshes transformed into military land. Today it is a set of saltworks bearing the scars of human occupation. Great place to watch bird migration.

Added* by Yann K.
Most recent update 18 November 2020


Marais de Kersahu is an unmissable place for the migration of birds. Many birds also breed in the area. Located between the ocean and the Petite mer de Gâvres, this 60-hectare area has been preserved from human activity thanks to the presence of the military for two centuries. After having been converted into salt marshes ages ago, the fate of the Kersahu marshes changed in 1829, with the arrival of the military. All French naval artillery was tested in the marshes. But due to the presence of the military, this area was preserved and it played a major part in maintaining this remarkable natural area. A setting that today offers thousands of birds a breeding area of a feeding stop during migration. Many nice birds can be seen here, see the birdlist below.


Français: Anciens marais salants transformés en terrain militaire. C'est aujourd'hui un ensemble de salines portant les ciicatrices de l'occupation humaine. Lieu incontournable pour la migration des oiseaux, beacoup d'entre eux ont aussi choisi ce site pour se reproduire.



Take the direction of Gâvres and park in the beach car park at the entrance to the city. The suggested route on the Birdinplaces-map below is about 7 km.


Français: Prendre la direction de Gâvres et se garer sur le parking de la plage à l'entrée de la ville. L'itinéraire suggéré sur la carte Birdinplaces ci-dessous est d'environ 7 km.

Terrain and Habitat

Wetland , Mud flats , Beach , Dunes , Scattered trees and bushes , Moors/heathland


Wet , Slippery , No shadow , Open landscape

Circular trail


Is a telescope useful?


Good birding season

All year round

Best time to visit

Spring migration , Autumn migration


Unpaved road

Difficulty walking trail


Accessible by

Foot , Bicycle

Birdwatching hide / platform



View other birding spots in the area that are published on Birdingplaces


Top 5 birds

Other birds you can see here

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Comments & Tips

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