Just in from the Polish Mint, this Proof Silver Crown coin is sure to be a collector's item. The Eurasian Eagle Owl (Bubo bubo) is a species of horned owl resident in much of Europe and Asia. The Eagle Owl is a very large and powerful bird, only slightly smaller than the Golden Eagle. It is the largest species of owl with a wingspan of up to seven feet. Adults can weigh in excess of eight pounds, in comparison the common Barn Owl weighs about a pound. It mainly feeds on small mammals but will take prey up to the size of foxes and young deer. It will also take many other birds including other birds of prey. It is largely nocturnal and is found in mountains and forests with cliffs and rocky areas. It usually nests on cliff ledges. They live for around twenty years although like many other bird species in captivity they can live much longer, perhaps up to sixty years. The Eagle Owl's scientific name comes from its deep booming call. Named for their call the Bubo bubo owl ranges from throughout Europe across Russia to its Pacific coast, South to Iran and Pakistan and into China and the Koreas.