NSG Bienener Althrein

Lower Rhine Region  >  Germany

The nature reserve "Bienener Altrhein" has been designated as such since 1968. It's one of the last breeding areas in West-Germany of the Black Tern.

Added* by Lukas Rühlke
Most recent update 13 March 2020
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The nutrient-rich stagnant waters of Bienener Althrein are characterised by extensive zones of floating leaves and reeds, and small areas of floodplain forest are found along the banks. The area is characteristic of the breeding birds of the Lower Rhine, as was the case for several decades. In addition to a large number of breeding birds, the nature reserve also offers many resting limicoles and, in winter, huge groups of geese and white-tailed eagle.



Parking is available in the adjacent village Rees-Bienen. The area itself can be reached via a dyke, which is designed for pedestrians and cyclists. The dyke also offers the best view of the area.

Terrain and Habitat

Wetland , Grassland , River



Circular trail


Is a telescope useful?

Can be useful

Good birding season

All year round

Best time to visit

Winter , Spring migration , Autumn migration


Wide path

Difficulty walking trail


Accessible by

Bicycle , Foot

Birdwatching hide / platform


Extra info

In the nature reserve, the only Black Tern colony in Northwest-Germany breeds on artificial nesting aids. The Black Tern had also disappeared at the beginning of the 1990s in the Bienener Altrhein. With the help of a species protection project, the Naturschutzzentrum im Kreis Kleve e.V. has succeeded in reintroducing this endangered species.

There is probably no need to mention that exemplary behaviour is required. In this way, the breeding birds, but also the residents should not be disturbed.

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