Behaviour of Eurasian pochard (Aythya ferina) (1 Viewer)

Dear community,

I need information about the behaviour of ducks like Aythya ferina or Netta rufina in building a nest. We discuss about different ways. Use the ducks every year the same place (the same spot, max 100 metres around) or they are behave flexible and look for new nesting places (different lakes or others)?

Thanks for answers

Leo from germany