At the Groeneveld castle in my post of yesterday was a nice exhibtion about the dutch drawer and cartoonist "Peter van Straaten" .Between 1963 and 1970 he spent a couple of weeks during summer in the castle with other artists. He made many drawings of birds and nature an many of them are very humoristic. The text of the exhibition is "I don't know, just a bird".
This is a selfportrait with the 15 calendars he has made during the years.
More about the exhibition here.