Author 'Crabecanoe' (Id 113749 ) : Tuesday, April 13, 2010. Pond Vineyard in VALENCIENNES (. (59) Two geese cygnoides coming out of the pond. They are not shy and come to beg a piece of bread. Note the whitish line encircling the base of the bill. C ' is a feature to properly identify the Swan Goose. In principle, these geese are found in Eastern Europe. They are voluntary. They coexist with other geese in the pond.