However, Randy Thornhill of the University of New Mexico has gone further in his analysis of who mates with whom, and why.

ECONOMIST: Birds do it, bees do it | The

Curiosity is due to turn its drill again in this mudstone for further analysis before climbing out of Yellowknife Bay and heading for the crater's big central mountain, Aeolis Mons (Mount Sharp).

BBC: Curiosity Mars rover to investigate classic rock type

Further analysis also revealed the rhythm in the sound closely matched the patterns heard in human languages.

BBC: Primate call gives clues to human speech origins