|Most recent IBA monitoring assessment|
|Year of assessment||Threat score (pressure)||Condition score (state)||Action score (response)|
|2009||not assessed||very unfavourable||not assessed|
|For more information about IBA monitoring please click here|
Vresen is a small islet with a little vegetation, surrounded by shallow sea areas.
This is an important site for wintering Somateria mollissima; although numbers fell in the early 1990s due to siltation of mussel banks caused by the construction of the Great Belt Bridge, numbers in the Great Belt area as a whole seem to have recovered.
BirdLife International (2022) Important Bird Areas factsheet: Vresen and sea area between Fyn and Langeland. Downloaded from http://www.birdlife.org on 05/07/2022.