A 7,000 year old bird-like statue, which has puzzled Greek archaeologists for many years has gone on rare display at the National Archaeological Museum in Athens. Dubbed the\u201c7.000-year-old enigma\u201d the 36 cm granite statuette from the late Neolithic era has been brought out of the museum\u2019s hidden storerooms as part of the \u201cThe Unseen Museum\u201d exhibition for visitors to view artifacts from the closed storerooms, which have some 200,000 antiquities not on daily display. Unlike most Neolithic figurines made of soft stone, it is carved out of hard rock even though metal tools were not available at the time, and it is bigger than most Neolithic statues, which are rarely found over 35 cm tall. Even more quizzing is the lack of clear indication of whether it is male or female. Experts also cannot be sure of its provenance, as it belongs to a personal collection. They assume that it is from Northern Greek regions of Macedonia or Thessaly. \u201cIt could depict a human-like figure with a bird-like face, or a bird-like entity,\u201d said museum archaeologist Katya Manteli told Reuters\u00a0, adding, \u201cThe enigma has to do with (the fact) that we cannot identify with clarity its sex. It could be a pregnant figure but there are no breasts\u2026On the other hand it lacks male organs so it is presented as an asexual figure.\u201d Manteli says archaeologists choose which artifacts will be brought from the closed storerooms of the museum each month for the exhibit, based on criteria such as their mystery and individuality.