He rejected the Ratitae-Carinatae classification that separated tinamous and ratites. They include tanagers, rheas, tinamous, curassows, antbirds, ovenbirds, and toucans. Hawks, falcons, herons, and tinamous ("perdiz", Argentine "false partridges") inhabit the region. One can spot many local birds like clarineros, toucans, chachas (wild chickens), tinamous and magpies. It is also found in tinamous and herons. Although some species are quite common, tinamous are shy and secretive birds. The major threat for the forest tinamous is deforestation. Peru contains the largest number of tinamous of any country. With a total length of , it is among the largest tinamous. Neotropic tinamous (compare to Neognathae). The tinamous of Central and South America are primarily terrestrial, though they fly weakly. Chilean tinamous have been introduced to Easter Island. There have been several unsuccessful attempts to introduce tinamous to the United States. The tinamous are one of the most ancient groups of bird. The practice of burning the fields is particularly detrimental to grassland tinamous.