Snow goose populations have grown to ecological crisis levels in North America, with massive flocks destroying Arctic and sub-Arctic wetland habitat in ways that harm the welfare of many other dependent species.
The snow goose overpopulation crisis illustrates how the welfare of one abundant species can create cascading welfare harms for hundreds of dependent species. Shorebirds, waterfowl, and other migratory species that depend on intact Arctic wetlands face habitat loss from snow goose overgrazing. While individual snow geese are not suffering, the ecosystem-level impacts of their abundance cause suffering for many other animals whose habitat is being eliminated. Management approaches that reduce snow goose populations to ecologically sustainable levels serve the aggregate welfare of the broader community of species dependent on these habitats.