Birds of America
By John James Audubon, F. R. SS. L. & E.
THE PRAIRIE WARBLER.
SYLVICOLA DISCOLOR, Vieill.
PLATE XCVII.--MALE AND FEMALE.
This little bird has no song, at least I never heard any from it, excepting
a delicate soft whirr, ejaculated whilst it stands erect on the top of some rank
weed or low bush. Its nest, which forms by far the most interesting part of its
history, is uncommonly small and delicate. Its eggs I have uniformly found to
be four in number, and of a white colour, with a few brownish spots near the
larger end. The nest is sometimes attached to three or four blades of tall
grass, or hangs between two small sprigs of a slender twig. At first sight, it
seems to be formed like that of the Humming-bird, the external parts being
composed of delicate grey lichens and other substances, and skins of black
caterpillars, and the interior finished with the finest fibres of dried vines.
Two broods are reared each season.
In Louisiana I found this bird amongst our cotton fields, where it easily
procures the small insects and flies of which its food is entirely composed. It
is also found in the prairies along the skirts of the woodlands. I have shot
several within a few miles of Philadelphia, in the Jerseys, in a large opening
where the woods had been cut down, and were beginning to spring up again. Its
flight is light and short, it making an effort to rise to the height of eight or
ten yards, and immediately sinking down to the grass or bushes. Whilst on the
ground, where it remains a good deal, it searches amongst the leaves slowly and
carefully, differing in this respect from all the true Warblers with which I am
acquainted. They go singly, and far apart, scarcely more than three or four
being ever seen on an extent of twenty or thirty acres. It is one of the first
birds that arrives in spring in Louisiana, and one of the first to depart, being
rarely found after the first week of September. I never saw it farther east
than on the ridges of the Broad Mountain, about twelve miles from Mauch Chunk;
but I have seen it on the Arkansas river, and high up on the Mississippi, as
well as along the southern borders of Lake Erie. The young are apt to leave the
nest if discovered when unable to fly, and follow their parents through the
grass to be fed.
The plant on which a pair of Prairie Warblers are represented, is commonly
called buffalo grass, and is found all along the edges of our extensive
prairies, in the barrens of Kentucky, and in Louisiana, excepting in the swamps,
it being more inclined to grow in dry soil and stiff grounds.
PRAIRIE WARBLER, Sylvia minuta, Wils. Amer. Orn., vol. iii. p. 87.
SYLVIA DISCOLOR, Bonap. Syn., p. 83.
PRAIRIE WARBLER, Sylvia discolor, Nutt. Man., vol. i. p. 294.
PRAIRIE WARBLER, Sylvia discolor, Aud. Orn. Biog., vol. i. p. 76.
Wings rather short, with the outer four quills nearly equal, the second and
third longest; tail emarginate and rounded. Male with the upper parts
yellowish-green, the back spotted with chestnut-red; lower parts, and a band
over the eye, bright yellow; two bands of dull yellow on the wing; outer four
tail-feathers with a white patch on the inner web; a small streak before and
behind the eye, one on the cheek, a spot on the side of the neck, and oblong
markings on the sides, black. Female similar, but paler, especially beneath,
and without the black streaks on the side of the head.
Male, 5, 7.
From Texas to Massachusetts. Migratory. Abundant.