A male jackdaw's courtship behaviour ios astonishingly human. All his movements are consciously strained and his proudly reared head and neck are permanently in a state of self-display. He provokes the other jackdaws continually if the female jacdaw is looking on and he purposefully becomes embroiled in conflicts with otherwise deeply respected superiors. About all, he seeks to impress his loved one with the possession of a potential nesting site, from which he derives all other jackdaws, irrespective of their rank.
Which of the following statements best describes the central theme of the passage ?

Options

A. The courtship behaviour of birds
B. The similarities between the courtship behaviour of birds and man
C. The astonishing facts about the jackdaw's love life
D. The scientific study of the jackdaw's life