Original: It is the smallest of the birds called '' swans '' , but still a large species of waterfowl , averaging 4.2 kg ( 9.3 lbs ) , 1 m ( 3.3 ft ) long and 1.57 m ( 5.2 ft ) across the wings .
Simplified: The Coscoroba Swan is found in South America from southern Chile and central Argentina south to Tierra del Fuego and the Falkland Islands .