Roodborst territorium/Sculptuur 1969 = Robin Redbreast's Territory/Sculpture 1969 = Doaine dún rouge-gorge/Sculpture 1969 = Rothkelchenterritorium/Skulptur 1969

"At the beginning of March 1969, I decided to displace a robin redbreast's territory so that the robin's flight would shape my sculpture/drawing,” writes Dibbets in the slim volume that also features photographs, topographical surveys, and handwritten notes.
Having gained “sufficient insight into the various possibilities”, Dibbets placed two poles close to a clump of trees in an Amsterdam park. His reasoning, according to the book's diary entries, was to pique the curiosity of the robin, and have him take perch on the pole. Each following day the artist would relocate the poles, moving them slightly further away from the trees until eventually they were completely isolated, thus having displaced the bird’s natural territory.
source: http://artistsbooksandmultiples.blogspot.com