Common Goldeneye

The Common Goldeneye (Bucephala clangula) is a medium-sized diving duck of the northern forests. Named for its brilliant, golden-yellow iris, this hardy sea duck is well-known for its striking plumage and remarkable diving ability. It belongs to the genus Bucephala, which translates to 'bull-headed', referencing the bulbous, puffy shape of the bird's head. During winter, these ducks migrate south to ice-free lakes, rivers, and coastal waters, bringing life to cold, grey landscapes with their energetic foraging and distinctive wing-whistling in flight.

Common Goldeneyes exhibit strong sexual dimorphism.

• Adult Males: Feature an iridescent, dark green head that often looks black in poor light. A prominent, round white patch sits between the bright yellow eye and the black bill. The body is sharply contrasty, with a bright white breast and flanks, a black back, and black wings.
• Adult Females: Have a warm chocolate-brown head, a slate-grey body, a white collar, and pale yellow eyes. The dark bill develops a bright yellow tip during the breeding season.
• In Flight: Both sexes show large white patches on the inner wing. A key non-visual identifier is the loud, metallic whistling sound produced by their wings in flight.

Similar Species:

• Barrow's Goldeneye: The male Barrow's has an elongated, crescent-shaped white facial patch (rather than round), a purplish head sheen, and more black on the flanks with a series of white spots. Females of Barrow's typically have an almost entirely yellow-orange bill in winter and a steeper, more vertical forehead.

Common Goldeneyes breed across the boreal forests of North America, northern Europe, and Asia. They require habitats near lakes, deep marshes, or slow-moving rivers surrounded by mature trees that can provide nesting cavities.

In winter, they migrate south to ice-free interior waters, such as large lakes, reservoirs, and fast-flowing rivers, as well as marine shorelines, shallow coastal bays, and estuaries. They are exceptionally hardy and will remain as far north as open water permits, often staying near ice edges.

Foraging and Diet: As diving ducks, they submerge completely to hunt, typically spending 10 to 30 seconds underwater. They use their strong feet to propel themselves, foraging along the bottom for aquatic insects, mollusks, crustaceans, and occasionally small fish.

Courtship: The courtship display of the male Common Goldeneye is one of the most dramatic among waterfowl. He throws his head back onto his rump, points his bill straight up, kicks water backward with his feet, and utters a buzzy, nasal call.

Nesting: They are secondary cavity nesters, relying on old woodpecker cavities (especially those of the Pileated Woodpecker) or artificial nest boxes. Soon after hatching, the ducklings jump from the cavity—sometimes from heights of up to 40 feet—to the ground below, guided by their mother's calls.

Vocalizations: Mostly silent outside the breeding season, though the whistling of their wings is a constant acoustic indicator. Males produce a buzzy, nasal 'speer-speer' during courtship displays, while females make a low, hoarse 'gack' sound.