The tundra swan is a harbinger of winter at Hog Island. Although these magnificent birds nest in the arctic tundras during the summer, their annual southern migration to the estuaries of the Mid-Atlantic regularly bring winter flocks to the WMA. Look for their all white plumage, long and skinny necks, and black feet and bill as they gracefully glide across the waters of the impoundments.

The bald eagle is an iconic bird recognizable by just about everyone. But did you know that Hog Island WMA serves as an important concentration area for the species? Although bald eagles can be readily observed onsite year-round, winter is eagle nesting season so survey the bare treetops for the perched silhouette of an eagle or potentially even the makings of a nest. Lucky observers may even see them snatching an unsuspecting fish from the water.

Winters at Hog Island are all about the waterfowl. Larger species of dabbling ducks flock to the impoundments by the masses where moist soil management throughout the summer and fall ensure an adequate food supply awaits these birds upon their winter arrival. Specific species to look out for include gadwall, American wigeon, Northern pintails, and American black ducks. 

Hooded mergansers and buffleheads are two of the more attractive ducks often seen on camera throughout the winter as they dive for food. Although males of these species may look similar to some, hooded mergansers can be distinguished by their larger size black and brown wings, and a crest which features a white patch completely surrounded by a black border as opposed to a crest only surrounded by black on three sides.