7. Anthus correndera (Vieill.).

—Found everywhere in open ground, singly or in pairs in summer, usually in loose flocks in winter. The great variations in color, length of hind claw, etc., have given rise to several named varieties and species, all now referred to this one species. The bird doubtless breeds throughout the whole country, but I was unable to find a single nest or gain any reliable information as to its breeding habits. Half a dozen different birds of about the same size and general color are commonly called by the same name—“ Chingolo” — and this bird is rarely distinguished from the common Zonotrichia, even by the ganchos, who are usually very observant of all living things found on the pampas.