This bird is one of the earth-birds, made for my art project about bullying. http://www.feathers-and-dragons.simpsite.nl

The Van Dijck brown bird uses the warmth of the earth in a very special way, by building an enormous nest mound for the egs. So the egs are not incubated directly. This very special earth bird takes care that the temperature in his nest heap is exactly the right one for the egs.
The warmth in the heap is measured with the beak. More leaves are added to or removed from the heap, to get more or less warmth for the egs.

I used the Yil bird pattern of Mathilde Jongbloed as a start, but I changed it a lot. I used wire inside the bird and for the legs.