Wild geese are a group of birds that belong to the family Anatidae, which includes ducks, swans, and geese. The four crossword solutions for the term 'wild goose' are NENE, BRANT, GRAYLAG, and CHEN. NENE is a species of goose native to Hawaii, BRANT is a species of goose found in the northern hemisphere, GRAYLAG is a species of goose found in Europe, Asia, and North America, and CHEN is a genus of geese found in the northern hemisphere.