Common Goldeneye

Overview

The Common Goldeneye is a medium-sized diving duck of northern forests, nesting in tree cavities near lakes and rivers and wintering on a wide range of open water bodies. Breeding males show a puffy, glossy dark green head marked by a single round white spot just in front of the golden eye, paired with a crisp black-and-white body. Females have a chocolate-brown head and gray body, sometimes with a white collar. The species is closely related to, and can be confused with, Barrow's Goldeneye where their ranges overlap.

Feather Identification

• Face spot shape: Males show a round or oval white spot between the eye and bill base - a key distinction from the crescent-shaped spot of Barrow's Goldeneye.
• Head gloss: Head feathers show a green iridescence in good light, rather than the more purplish tone typical of Barrow's Goldeneye.
• Back pattern: The black back shows fewer white markings along the scapulars compared to Barrow's Goldeneye, which has bold white spur-like stripes.
• Body contrast: Bold black-and-white body feathering with a clean white breast and flanks contrasting sharply with the black back and dark head.
• Female head shape: Females show a rounded brown head with a gradually sloping forehead, differing subtly from the steeper-fronted head of female Barrow's Goldeneye.

Plumage Notes

Breeding males combine a glossy dark green head, round white face spot, black back, and white underparts and flanks. Females have a brown head, gray body, and a pale or white neck collar that can vary in prominence. Eclipse males resemble females but often retain a darker back and traces of head gloss. The species undergoes a full molt after breeding, becoming flightless for a few weeks. Juveniles resemble females, with young males slowly developing the characteristic white face spot and body pattern over their first year or two.

Habitat & Range

Common Goldeneyes breed across the boreal forest zones of North America and Eurasia, nesting in tree cavities near lakes, ponds, and slow rivers. In winter, they move to a wide variety of open waters, including coastal bays, large rivers, and lakes that remain ice-free. The species is migratory, shifting from northern forested breeding grounds to more temperate wintering areas each year.

Behavior & Field Notes

Common Goldeneyes are agile divers, foraging on aquatic invertebrates from the bottoms of lakes, rivers, and bays. Their wings produce a distinctive whistling sound in flight, which has earned the species the nickname "whistler." They nest in tree cavities, sometimes far from water, and ducklings must jump to the ground shortly after hatching to reach nearby water. Courtship displays are elaborate, involving head-throwing and neck-stretching postures accompanied by soft calls. The species is generally solitary or found in small groups outside migration.