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.
Photographer: Mary Hollinger
Affiliation: NODC biologist
Date: 1999 May 22
Location: Maryland, Lower Patuxent River
Subject: Chesapeake Bay Maryland
Subject: Animals Bird