HAVANA, (Reuters) – Fidel Castro turns 87 today, largely out of sight but not out of mind, as Cuba struggles to move on from his half-century rule and as many of his policies are reconsidered under the leadership of his younger brother Raul. The birthday of one of Latin America’s most iconic revolutionary figures has been a low key celebration in recent years. A choral concert in his honor at the Jose Marti national monument in Havana last evening was the only official event planned. Castro goes about his daily activities out of the public eye, and how much influence the retired commandante still wields is unknown. He emerges every once in a while to reassure his followers that he is very much around, frustrating those who wish he was not.