Choice food from the ground.
Vesper Sparrow
Pooecetes gramineus
Several kinds of sparrows can be found in open fields, along roadside fences and hedgerows, but the Vesper Sparrow is easiest to identify. If you should miss the chestnut patch on the bend of the wing or the white belly, bordered by fine lines, you still will notice the white outer-tail feathers. The back is a light grayish-brown with dark stripes.
Juncos and pipits also have white outer-tail feathers, but adult juncos show no stripes and pipits walk instead of hop. Western Vesper Sparrows show less brown in their plumage, some being almost a light gray, but still show darker lines on their backs, sides and breasts.
These birds use grass and small roots in building their nests, which usually are in or near a clump of grass. Their eggs are grayish white, heavily marked with brown.
Vesper Sparrows are good singers. Their best efforts seem to be late in the evening, when dusk replaces the fleeting shadows; their musical notes add a fitting benediction to the dying day. This chorus accounts for the name. Songs vary, but usually start with 2 pairs of long melodious notes, the second pair higher in pitch, then a series of rapid notes beginning still higher, then coming down the scale to end in a soft warble.
You might have been a junco
From markings on your tail,
But you prefer the prairies