It Was Remarked That This Bird Did Not Expand
Its Wings, When First Starting At Full Speed, After The Manner
Of The Northern Kind.
In conclusion I may observe, that
the Struthio rhea inhabits the country of La Plata as far
as a little south of the Rio Negro in lat.
41 degs., and that
the Struthio Darwinii takes its place in Southern Patagonia;
the part about the Rio Negro being neutral territory. M.
A. d'Orbigny, [16] when at the Rio Negro, made great exertions
to procure this bird, but never had the good fortune to
succeed. Dobrizhoffer [17] long ago was aware of there being
two kinds of ostriches, he says, "You must know, moreover,
that Emus differ in size and habits in different tracts
of land; for those that inhabit the plains of Buenos Ayres
and Tucuman are larger, and have black, white and grey
feathers; those near to the Strait of Magellan are smaller
and more beautiful, for their white feathers are tipped with
black at the extremity, and their black ones in like manner
terminate in white."
A very singular little bird, Tinochorus rumicivorus, is
here common: in its habits and general appearance, it nearly
equally partakes of the characters, different as they are, of
the quail and snipe. The Tinochorus is found in the whole
of southern South America, wherever there are sterile plains,
or open dry pasture land. It frequents in pairs or small
flocks the most desolate places, where scarcely another living
creature can exist. Upon being approached they squat close,
and then are very difficult to be distinguished from the
ground. When feeding they walk rather slowly, with their
legs wide apart. They dust themselves in roads and sandy
places, and frequent particular spots, where they may be
found day after day: like partridges, they take wing in a
flock. In all these respects, in the muscular gizzard adapted
for vegetable food, in the arched beak and fleshy nostrils,
short legs and form of foot, the Tinochorus has a close affinity
with quails. But as soon as the bird is seen flying, its
whole appearance changes; the long pointed wings, so different
from those in the gallinaceous order, the irregular
manner of flight, and plaintive cry uttered at the moment
of rising, recall the idea of a snipe. The sportsmen of the
Beagle unanimously called it the short-billed snipe. To this
genus, or rather to the family of the Waders, its skeleton
shows that it is really related.
The Tinochorus is closely related to some other South
American birds. Two species of the genus Attagis are in
almost every respect ptarmigans in their habits; one lives
in Tierra del Fuego, above the limits of the forest land; and
the other just beneath the snow-line on the Cordillera of
Central Chile. A bird of another closely allied genus, Chionis
alba, is an inhabitant of the antarctic regions; it feeds
on sea-weed and shells on the tidal rocks. Although not
web footed, from some unaccountable habit, it is frequently
met with far out at sea.
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