Snow Goose

Identification

The snow goose displays two distinct color morphs: white birds with black wing tips, or blue-morph birds with bluish-gray plumage on the body and white on the head, neck, and tail tip. Both morphs share distinctive features including rose-red feet and legs, and pink bills with black "cutting edges" that create a characteristic black "grin patch." These colors distinguish snow geese from white domesticated geese. Immature blue-morph birds appear drab or slate-gray with little white on the head, neck, or belly, and all age classes may show rusty-brown staining on the head from minerals in feeding soils. The species is highly vocal, often audible from more than a mile away.

Two subspecies are recognized: the lesser snow goose, standing 64 to 79 cm tall and weighing 2.05 to 2.70 kg, and the greater snow goose, averaging 79 cm and 3.2 kg (up to 4.5 kg). Both subspecies share a wingspan of 135 to 165 cm. White and blue morphs freely interbreed, and their offspring may be either color, as the dark phase results from a single dominant gene while the white phase is homozygous recessive.

Range & Habitat

Snow geese breed north of the timberline across Greenland, Canada, Alaska, and the northeastern tip of Siberia. The greater snow goose subspecies nests in northeastern Canada and northwestern Greenland, while the lesser snow goose breeds across northeast Siberia, northern Alaska, and northwestern Canada. They spend winters in warm parts of North America, ranging from southwestern British Columbia through parts of the United States to Mexico, with the greater subspecies wintering in the northeastern USA and the lesser subspecies in the southern USA, northern Mexico, and Japan.

Behaviour & Diet

Snow geese are highly social birds that often nest in colonies on high ground in shallow depressions lined with plant material. Long-term pair bonds typically form in the second year, though breeding usually does not commence until the third year. Females are strongly philopatric, returning to their natal sites to breed year after year. Nesting begins from late May through early June depending on snow conditions, with females laying three to five eggs and incubating for 22 to 25 days. Young leave the nest within hours of hatching, feed themselves, and fledge within 42 to 50 days, though they remain with their family until two to three years old.

Snow geese spend more than half the year migrating between breeding and wintering grounds, traveling more than 3,000 miles along narrow corridors in large flocks at high altitudes. The species migrates through prairie and farmland regions during spring and fall movements.

Best Time & Places to See It

Snow geese breed from late May to mid-August in Arctic tundra regions. The best opportunities for viewing occur during migration periods as vast flocks move along established flyways between breeding grounds in the north and wintering areas across North America. Lesser snow geese utilize the Central Flyway, Mississippi Flyway, and Pacific Flyway, while greater snow geese winter in the northeastern United States.

Photography Tips

Photograph snow geese during migration when they congregate in large, accessible flocks across prairie and farmland habitats. The stark contrast between white plumage and black wing tips creates excellent photographic subjects, while blue morphs offer darker tones for varied compositions. Capture the birds' distinctive pink bills and red feet in close-up shots. Their highly vocal nature means you can often locate flocks by sound before spotting them visually, allowing you to position yourself in advance of arriving birds.