Lower Patuxent River, Maryland 1999 May 22 675. Mute swans with 8 cygnets. Mute swans are an agressive invasive species. There are now over 3,000 mute swans in the Maryland portion of the Chesapeake Bay. Lower Patuxent River, Maryland 1999 May 22 676.
Mute swans are an agressive invasive species.
There are now over 3,000 mute swans in the Maryland portion of the Chesapeake Bay. Lower Patuxent River, Maryland 1999 May 22 677. August 11 678. August 11 679. Upper Patuxent River, Maryland 1999 May 30 680.