Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Wadden Sea' has mentioned 'Well' in the following places:
Occurrence Sentence Text Source
It is also a rich habitat for gulls and terns,[7] as well as a few species of herons, Eurasian spoonbills and birds-of-prey, including a small and increasing breeding population of white-tailed eagles.
[8] However, the biodiversity of Wadden Sea is smaller today than it once was; for birds, greater flamingos and Dalmatian pelicans used to be common as well, at least during the Holocene climatic optimum when the climate was warmer.
Co-operation covers management, monitoring and research, as well as political matters.
The property is a key site for migratory birds and its ecosystems sustain wildlife populations well beyond its borders.
Human use and influences are well regulated with clear and agreed targets.