There has been times over the years that different species of geese and swans have come under threat.  Right now, none of the six species of swans are endangered.  However, there are some geese – such as the Hawaiian goose – which are near threatened.  Despite this, geese are much more common and abundant than swans.  The population of geese is estimated to be more than 10 million while the population of swans is estimated to be no more than 2 million birds.