Lesser White-fronted Goose, Anser erythropus, is a species of goose found in cropland, grassland, heathland and shrub, wetland and river and lake ecosystems. It breeds mainly in northern Siberia, but its global breeding range also extends into northern European Russia and Fennoscandia. This species breeds in low-lying bogs, scrub-covered tundra and taiga-forest edges close to wetlands, up to 700 m Asl. It can also be found on the slopes by the lower parts of mountain streams, on mountain foothills, mountain lakes and on alpine precipices, often in thawing boggy areas or on stone fields. It often nests on snow-free patches available early in the breeding season (such as rocky outcrops or prominent hummocks) hidden amongst vegetation or in boggy hollows, usually in close proximity to open water or marshy areas (European Red List 2015).

Anser erythropus has a breeding population size of 15-30 pairs and a breeding range size of 3000 square kilometres in the EU27. The breeding population trend in the EU27 is Stable in the short term and Increasing in the long term. Anser erythropus has a winter population size of 80-280 individuals in the EU27. The winter population trend in the EU27 is Decreasing in the short term and Uncertain in the long term.

The EU population status of Anser erythropus was assessed as Threatened, as the species meets one or more of the IUCN Red List criteria for threatened at the EU27 scale.