Lake Constance: Bay of Constance

Country/territory: Switzerland

IBA Criteria met: A4iii, B1i (2000)
For more information about IBA criteria please click here

Area: 191 ha

SVS/BirdLife Switzerland
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2011 high not assessed negligible
For more information about IBA monitoring please click here

Site summary
A shallow bay on Lake Constance with a mainly artificial shoreline. The Swiss part of a transboundary IBA together with the German IBA «Lake Constance-Obersee, and the adjacent Seerhein» (site DE227). The site holds 20’000 or more waterbirds in winter, on a regular basis (includes Tufted Duck 2’500-5’600 individuals). The site only fulfils criteria if the Swiss and German IBA are considered together. The main threat is disturbance from boats. Most of the area is protected from hunting by cantonal legislation.

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Lake Constance: Bay of Constance. Downloaded from on 01/12/2021.