Simplify the following text for a Grade 4 native English-speaking person.
Original: The Albanian word for eagle is `` shqiponje '' deriving from the root `` shqipe '' , which means `` eagle '' . In Britain before 1678 , Eagle referred specifically to the Golden Eagle , the other native species , the White-tailed Eagle , being known as the Erne .
Simplified: The largest eagle that has ever lived is Haast 's Eagle .