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Donaustau at Greifenstein

Niederösterreich  >  Austria

Danube side arm with reservoir. 220 recorded species, most of them wintering birds.

Hinzugefügt* von Peter Wittemann
Zuletzt aktualisiert 24 November 2025
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Beschreibung

The area at the Danube reservoir at Greifenstein consists of a roughly 2.5-kilometre peninsula (1) that separates the Danube (2) from an old southern side arm (3). Around 220 species have already been recorded in the area. Most interesting are gulls, ducks, geese, and divers which stay from mid-October until early spring.

The side arm (3) is best explored on foot or by bike from the southern path “Am Damm.” Afterwards, it is worth walking across the “Die Schwelle” bridge to the Danube lock. Along the way you pass several small islets that are also worth checking. From dam on the lock, only the eastern part of the Danube is visible, where gulls and cormorants rest. As early as late summer and autumn, the Schwarzkopfmöwe is occasionally sighted, followed somewhat later by the Silbermöwe. More common are Mittelmeermöwe, Steppenmöwe, and Lachmöwe. The Zwergmöwe has been recorded especially in November. Four sightings of the Mantelmöwe and three of the Dreizehenmöwe also come from the cold season. Records of the heuglini subspecies of Heringsmöwe ("Heuglin's gull") and Eismöwe are rare but confirm the site’s potential. Among cormorants, the Atlantic subspecies P. c. carbo is regularly observed.

The island (1) is covered with a strip of alluvial and deciduous forest. Noteworthy among the probable breeding birds are Halsbandschnäpper, Mittelspecht, and on the islets the Flußuferläufer. Most surveys in the area, however, take place outside the breeding season; in the summer, the side arm is frequented by swimmers and water sports enthusiasts. Of particular interest are the winter gatherings of waterbirds either on the side arm or on the impounded Danube itself (2), which reach their peak in January. They can be viewed from the northern path, which is heavily used by cyclists.

Among the ducks, the Reiherente is the most numerous. A regular guest between November and January is the very similar Bergente. Less frequently at the same time, the Samtente, Ohrentaucher and Rothalstaucher are recorded, and even more rarely the Eisente. Those not lucky with rarities can expect Gänsesäger, Schellente, and Heringsmöwe. The food-rich area also regularly attracts the Seeadler.

Details

Zugang

The Danube side arm and reservoir are located in Greifenstein, about 25 km north of Vienna. While parking is possible (click on "P" on the map to get directions), the area is best reached by public transport or bicycle. The paths are wheelchair accessible.

Terrain und Habitat

Wald , Fluss , Stadt/Dorf

Bedingungen

Flach

Rundweg

Ja

Ist ein Spektiv nützlich?

Ja

Gute Beobachtungszeit

Frühjahr , Winter

Beste Beobachtungszeit

Winter

Route

asphaltierte Straße , Normaler Weg

Schwierigkeitsgrad der Tour

Einfach

Erreichbarkeit

zu Fuß , Fahrrad , Rollstuhl

Beobachtungshütten oder -türme

Nein

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