The Concord and Sudbury rivers celebrated Riverfest this past Saturday. Mass Audubon had a display in the kids' area at the Concord River Greenway in Lowell. This female mallard was lovin' her some duckweed. I took about 5 shots to get her with her head out of the water and duckweed still clinging to her face.
Merrimack River Watershed Council was there too along with many arts and green groups. (For the geographically challenged, the Concord is a major tributary of the Merrimack and flows into it at Lowell.)