Though we have more man made structures in the frame the nature (birds) seem to get enough emphasis. Silhouetted head seem to work well making us think about thoughts in that mind. The most appealing part to me is the contrasting aspect of static and dynamic elements of the frame. The slice of time is well portrayed - love those muted spectators (clothes) of time - the flying birds and the walking person. An intriguing frame for my taste buds..