Common Merganser Mergus merganser Linnaeus, 1758  Synonyms: American Merganser, COME, Fisherman, Pied Fisherman, Shelldrake.
Kingdom Animalia   >   Phylum Chordata   >   Class Aves   >   Order Anseriformes   >   Family Anatidae   >   Genus Mergus   

Status:

Common winter resident on large open water, such as lakes and reservoirs. Rarely encountered in southern Maryland and on the lower Eastern Shore away from Blackwater NWR. Local elsewhere on the Eastern Shore. Increasing as a breeder along the Potomac River and Susquehanna River.

Where to find:

Common on most of our large reservoirs in winter, including Triadelphia and Loch Raven. Also easy to find in the large areas of open water at Blackwater NWR.

There are 215 records in the project database.

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A pair of Common Mergansers in Harford Co., Maryland (2/18/2007). Photo by Bill Hubick. (MBP list)

A hen Common Merganser on the Susquehanna River, Harford Co., Maryland (2/18/2007). Photo by Bill Hubick. (MBP list) (More of this species)

A Common Merganser in Garrett Co., Maryland (2/5/2017). Photo by J.B. Churchill. (MBP list)

A Common Merganser in Garrett Co., Maryland (2/5/2017). Photo by J.B. Churchill. (MBP list)

A hen Common Merganser with chicks on the Potomac River in Montgomery Co., Maryland (3/23/2013). Photo by Dave Czaplak. (MBP list)

Common Merganser family at Riley's Lock, Montgomery Co., Maryland (4/25/2011). Photo by Evelyn Ralston. (MBP list)

A hen Common Merganser with young on the Potomac River, Montgomery Co., Maryland (4/10/2012). Now a regular nesting species there. Photo by Nancy Magnusson. (MBP list)

Common Mergansers along the Susquehanna River in Harford Co., Maryland (10/21/2014). Photo by Mark Johnson. (MBP list)

A pair of Common Mergansers displaying in Howard Co., Maryland (2/22/2009). Photo by Nancy Magnusson. (MBP list)

A drake Common Merganser on the Susquehanna River, Harford Co., Maryland (2/18/2007). Photo by Bill Hubick. (MBP list) (More of this species)

A male Common Merganser in flight in Harford Co., Maryland (3/28/2014). Photo by Matthew Addicks. (MBP list)

A hen Common Merganser at Jug Bay Wetlands Sanctuary, Anne Arundel Co., Maryland (2/1/2014). Photo by Frode Jacobsen. (MBP list)

Common Mergansers in Prince George's Co., Maryland (1/18/2018). Photo by Jim Stasz. (MBP list)

A flock of Common Mergansers over Wicomico, Co., Maryland (1/4/2013). Common Merganser is rare in Wicomico, Somerset, and Worcester Counties. Photo by Mike Burchett. (MBP list)

Common Mergansers followed by a Canvasback in Queen Anne's Co., Maryland (2/1/2019). Photo by Daniel Irons. (MBP list)


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