A polar bear is resting his head on a stonewall. Next to his head a small bird, a wren, has landed. Is the bird asking for attention or is it concerned with the sleeping bear?  What is going on with this animal that is supposed to be the symbol of strength. Every once in a while the bear moves his lips or opens his eye as if it reacts to the birds twittering. The spectator witnesses this very special moment. One would love to know about the communication between the two. The title of the work is a term used in psychology that refers to bystanders intervening (or not) in cases of emergency.