Thanks for the kind replies.
I assume the vegetarian lady newt was on the hunt. I often find them eating snails, worms or bugs. Sometimes they also just sit in front of snails and bugs and seem to wait until they move. Especially bugs and snails tend to sit on blades of grass.
Here are some examples from earlier this year and last November:
January 15th, 2011 - Bug staring contest
![Image](http://www.min.uni-heidelberg.de/natur/january4a.jpg)
November 2010 - Successful snail hunting
![Image](http://api.ning.com/files/pdc3LfdugbemXU7w4x6oMiFjbXbZ3AVwUJk3ySe1ai5X7dz9Euz*AmWYs-nPnWuqR3p9JfWlIO-15FIFqV8g2Q__/AlpineNewt6.jpg?width=737&height=514)
November 2010 - Litte newt + big worm
![Image](http://www.adnoctem.de/Alpen5.jpg)