397. GALLINAGO PARAGUAIÆ (Vieill.).

(PARAGUAY SNIPE.)

+Scolopax frenata+, _Burm. La-Plata Reise_, ii. p. 503. +Gallinago

paraguaiæ+, _Scl. et Salv. P. Z. S._ 1868, p. 144 (Buenos Ayres);

_iid. Nomencl._ p. 144; _Durnford, Ibis_, 1877, p. 198 (Buenos

Ayres); _Barrows, Auk_, 1884, p. 314 (Entrerios); _Withington,

Ibis_, 1888, p. 472 (Lomas de Zamora). +Scolopax frenata

magellanica+, _Seebohm, Plovers_, p. 496.

_Description._--Above brown, striped and barred with black and

pale fulvous; wings dark cinereous edged with white; tail of 16

rectrices, of which the outer pair are pin-shaped: beneath white,

breast marbled with blackish and brown: whole length 10·5 inches,

wing 5·1, tail 2·4, bill 2·8.

_Hab._ Patagonia, La Plata, and Paraguay.

This familiar bird, called _Agachona_ in the vernacular, from its habit

of crouching close to the ground to escape observation when approached,

is abundant in the Plata district and resident, although its sudden and

total disappearance from all the open wet places where it is common in

the winter gives one the impression that it is migratory. The bird,

however, only retires to breed in the extensive lonely marshes. The nest

is a slight depression on the moist ground close to the water, and lined

with a little withered grass. The eggs are four, pear-shaped, and

spotted with black on an olive-coloured ground.

After the summer heats are over Snipes suddenly appear again all over

the country, and at this season they are frequently met with on the high

and dry grounds among the withered grass and thistles. In favourable wet

seasons they sometimes collect in large flocks, numbering not less than

five or six hundred birds, and a flock of this kind will occasionally

remain in one spot for several months without breaking up. They usually

frequent an open spot of level ground where the water just covers the

roots of the short grass; here the birds keep close together while

feeding and are visible from a long distance; but they become extremely

wary, all raising their heads in a very un-Snipe-like manner at the

slightest alarm, and taking flight with the readiness of Wild Ducks.

These flocks are, however, not often met with. Usually the Snipe is a

solitary bird, crouches close when approached, and springs up suddenly

when almost trodden on, loudly uttering its sharp scraping alarm-cry;

after rising to a considerable height, flying in a wild erratic manner,

it returns suddenly to the earth, often dropping into the grass within

twenty yards of the spot it rose from.

It is, indeed, curious to see how these habits, characteristic of the

Snipes all over the world, are so completely laid aside when the birds

associate in large flocks.

Early and late in the day many individuals are usually on the wing

engaged in their aerial pastimes, the singular grinding sounds caused

by their feathers in their violent descent from a great height being

distinctly audible at a distance of nearly a mile. It is heard

throughout the winter at all hours of the day in mild damp weather, and

on moonlight nights often until after midnight.

Argentine Ornithology, Volume 2 (of 2) A descriptive catalogue of the birds of the Argentine Republic. · 第 391 / 448 题