30/07/2025
Happy Wing Day Wednesday!
This week, we're diving into the world of a sleek and fascinating waterfowl often spotted in our local waterways: the Common Merganser (Mergus merganser)! These striking ducks are a familiar sight for those who frequent the Chenango River, Whitney Point Lake, or other area lakes and streams, especially during the cooler months.
The Common Merganser is a large duck easily recognizable by its slender, serrated bill, perfectly adapted for grasping slippery fish. The males are particularly handsome with their crisp white bodies and dark, iridescent green heads. Females sport a more subdued but equally elegant look with a rusty-brown head that often features a ragged crest and a gray body.
We've enjoyed watching these agile swimmers as they swiftly navigate the water's surface, often diving with surprising speed and grace in pursuit of their prey. They are excellent fishers, and their presence indicates healthy aquatic ecosystems. You might see them in pairs or small groups, or even larger congregations during migration. Keep an eye out for them both swimming and in flight – their streamlined bodies and powerful wingbeats make for an impressive sight.
Next time you're near the water in our area, take a moment to scan the surface for the distinctive profile of a Common Merganser and appreciate these efficient and beautiful inhabitants of our local environment.
Fascinating Facts About the Common Merganser:
Serrated Bill: Their long, narrow bill has saw-like edges (serrations) that help them grip slippery fish, their primary food source.
Excellent Divers: Common Mergansers are adept divers, often staying submerged for extended periods while hunting fish, aquatic insects, and crustaceans.
Cavity Nesters: Unlike many ducks that nest on the ground, Common Mergansers are cavity nesters, utilizing hollow trees near water, old woodpecker holes, or even nest boxes.
Precocial Young: The ducklings are precocial, meaning they are relatively mature and mobile soon after hatching. They will often jump from the nest cavity (sometimes quite high!) to follow their mother to the water.
Widespread Distribution: They are found throughout North America, Europe, and Asia, typically inhabiting freshwater lakes, rivers, and coastal areas.
Creche Behavior: Sometimes, multiple broods of young mergansers will group together under the care of one or more adult females in a behavior known as a "creche" or "gang brood."
Distinctive Flight: Their flight is strong and direct, with rapid wingbeats. They often fly low over the water.
Vocalization: They have a variety of calls, including harsh croaks and grunts, particularly during courtship and when alarmed.
Have you spotted any Common Mergansers on your recent adventures around Chenango Bridge? Share your observations and photos below!
Photos taken by Nancy O'Sullivan Baudendistel.
