Among land birds may be enumerated several varieties of eagle, vulture, falcon, owl, crow, jay, magpie, stork, quail, thrush, dove, &c. Pheasants are easily acclimatized; grouse and woodcock are indigenous on the uplands of the north; partridges, in all districts.
Wild geese and ducks, grouse, partridges, snipe, woodcock, quails, widgeons and teal are plentiful all over the country, and in recent years preserves have been largely stocked with pheasants.
To the ordinary spectator Tinamous have much the look of partridges, but the more attentive observer will notice that their Rufous Tinamou (Rhynchotus rufescens).
Caymans, water-hogs (capinchos), several kinds of deer (Cervus paludosus the largest), ounces, opossums, armadillos, vampires, the American ostrich, the ibis, the jabiru, various species popularly called partridges, the pato real or royal duck, the Palamedea cornuta, parrots and parakeets, are among the more notable forms. Insect life is peculiarly abundant; the red stump-like ant-hills are a feature in every landscape, and bees used to be kept in all the mission villages.
The more important wild animals are a large wild sheep (Ovis poli), foxes, wolves, jackals, bears, boars, deer and leopards; amongst birds, there are partridges, pheasants, ravens, jays, sparrows, larks, a famous breed of hawks, &c.