Thanks for all your ideas
My problem at the moment is that I´ve got a lot of things to do and not really the time to realise all the ideas-.-
Because of that I decided to come to an end with this project and just added a little bit of life to this scene (2 fishes and 4 birds).
I also tried myself on modelling some reed. The texture turned out quite bad but anyways I added it to the level

You can download it here:
http://files.filefront.com/Demoscene/;9529229;/fileinfo.html

Please tell me if it runs at an exaptable speed and if everything works
Thanks!