Patagonian grasslands ("Podiceps gallardoi"), the rare ruddy-headed goose ("Chloephaga rubidiceps") and the near threatened striated caracara ("Phalcoboenus australis"), which has suffered from over-hunting. The ecoregion has few protected areas. They include Dicky Private Wildlife Reserve ("Refugio Privado de Vida Silvestre Dicky") and Magallanes National Reserve on the mainland, and Reserva Costa Atlántica in Tierra del Fuego. The Patagonian Grasslands of Argentina Conservation Project, organized by The Nature Conservancy, is trying to develop sustainable grazing practices in partnership with scientists and landowners, but it is a challenge to find economic incentives. An Argentine company has worked with The Nature Conservancy to develop protocols
Patagonian opossum of La Pampa and Choele Choel (northern Rio Negro Province). It is suggested that the Patagonian opossum may have emerged from the same ancestral group as "Marmosa". They resemble each other closely. In the winter both types have similarly thickening at the base of the tails, where fat accumulates. Yet they do not share all aspects of their lifestyle; Patagonian opossums have a specialized way to gather and consume food, which is made possible by the shortening of their skull and jaws. The shortening occurs in the premolar region; this gives the Patagonian opossum increased biting power. The general appearance