Greater White-fronted Goose

How to find it

A visiting birder should not expect to see this goose, and no reliable site is known for finding it. Treat any sighting as a lucky surprise.

Because the goose is a grazer that sleeps on water, a vagrant would most likely turn up among other waterbirds on open shallow wetlands, or in fields near them. That is general habitat behaviour, not a Costa Rican finding. If you meet a goose, check for the white patch at the bill base, the pink bill and the orange legs.

How to recognise it

The name comes from the patch of white feathers around the base of the bill, and the Latin albifrons means white forehead. That face patch is the mark to look for.

Adults are grayish brown with dark blotches, a white patch around the bill edged in black, a pink bill and orange legs. The head and neck are brown. Together these marks help separate it from other geese. This is general information about the species, not specific to Costa Rica.

Young birds in fall are all gray-brown. They differ from young blue-morph Snow Geese by a pale bill, pale legs and white on the rump.

What it sounds like

Recording: Eric Knight, CC BY 4.0, source, read 4 Nov 2026.

Behaviour and diet

Across its range these geese pick grain from fields, graze grass, and tip up like dabbling ducks to reach underwater plants. Outside the breeding season they are social and gather in groups, flying in single file or in V formation.

That describes the species in general. In Costa Rica it has been recorded only as a rare vagrant, so flocks should not be expected.

Where it lives

Across its range this goose is a migrant. It breeds in northern Canada, Alaska, Greenland and Russia, and spends the winter farther south in North America, Europe and Asia.

Wintering birds like open country, where farm fields for feeding lie near wide shallow water for night roosting. In Costa Rica it is an accidental visitor, and the only named place is Las Trancas in Guanacaste, where the first record was made.

When to see it

The only dated Costa Rican record is from late November 2021, which falls in the northern winter migration period.

Similar birds

Canada Goose has a black neck and head with a black bill and legs, while this goose has a brown head and neck. Costa Rica has no Canada Goose record in our notes, so that is a general comparison. Young birds can be told from young blue-morph Snow Geese by a pale bill, pale legs and white on the rump. Some domestic geese also look like this species.

Names and lore in Costa Rica

Costa Rica's rarities committee calls this bird Ganso Careto in its announcement, and the official AOCR list gives the full name as Ganso Careto Mayor.

Status and conservation

The official Costa Rican list (AOCR) gives it status A, accidental: a rare vagrant, neither resident nor endemic, and the 2025-2026 list still shows it that way.