Mute Swan (Cygnus olor) on Nest  This is definitely not my favorite bird, but I am including it for the sake of completeness.  The mute swan population in the Rochester region has exploded in recent years.  This is a non-native species that competes with native species for habitat and food.  The increase in the mute swan population coincides with a sharp decrease in the populations of marsh birds such as black terns, common moorhens, and rails.  Photographed at Round Pond adjacent to Island Cottage Woods in Greece, NY on April 29, 2007. Mute Swan (Cygnus olor) Family at Nest  This family was photographed at Lake Whitney near New Haven, CT in May, 1989 shortly after the eggs hatched.  The couple was locally famous for raising a family in the same place several years in a row.  They had even been on TV.  Unfortunately, this non-native accidentally introduced species is far too successful.  The New Haven area is plagued by them. Mute Swan (Cygnus olor) with Small Cygnets  This mute swan with cygnets was photographed at Cape May Point State Park, NJ on May 13, 2014.  Unfortunately, mute swans seem to be on the increase in this area.
Mute Swan (Cygnus olor) in Flight  Photographed at Cape May Point State Park, NJ on Oct 9, 2012.  Unfortunately, Mute swans seem to be on the increase in this aream Juvenile Trumpeter Swan (Cygnus buccinator)  Photographed on film at Irondequoit Bay near Rochester, NY in January, 1996.  It may have come from a captive breeding and introduction program at Wye Marsh in Ontario, Canada.  This program is controversial because some experts believe that trumpeter swans were never present in this area historically.  Also, the captive bred swans, unlike their wild counterparts in the western US, are non-migratory.  It is also possible that it was an escaped pet bird. Trumpeters are now breeding in the Rochester, NY area and have the potential to become another nuisance species, like mute swans.  They could also potentially hybridize with mute swans.