The largest aquatic order is that of the Limicolse--snipes, plover, and
their allies--which has about twenty-five species. The vociferous
spur-winged lapwing; the beautiful black and white stilt; a true snipe,
and a painted snipe, are, strictly speaking, the only residents; and it
is astonishing to find, that, of the five-and-twenty species, at least
thirteen are visitors from North America, several of them having their
breeding-places quite away in the Arctic regions. This is one of those
facts concerning the annual migration of birds which almost stagger
belief; for among them are species with widely different habits, upland,
marsh and sea-shore birds, and in their great biannual journey they pass
through a variety of climates, visiting many countries where the
conditions seem suited to their requirements. Nevertheless, in
September, and even as early as August, they begin to arrive on the
pampas, the golden plover often still wearing his black nuptial dress;
singly and in pairs, in small flocks, and in clouds they come--curlew,
godwit, plover, tatler, tringa--piping the wild notes to which the
Greenlander listened in June, now to the gaucho herdsman on the green
plains of La Plata, then to the wild Indian in his remote village; and
soon, further south, to the houseless huanaco-hunter in the grey
wilderness of Patagonia.

Here is a puzzle for ornithologists. In summer on the pampas we have a
godwit--Limosa hudsonica; in March it goes north to breed; later in the
season flocks of the same species arrive from the south to winter on the
pampas. And besides this godwit, there are several other North American
species, which have colonies in the southern hemi-spere, with a reversed
migration and breeding season. Why do these southern birds winter so far
south? Do they really breed in Patagonia? If so, their migration is an
extremely limited one compared with that of the northern birds--seven or