142 BIRDS OF OHIO. 
Frequently when first flushed they utter a rapid rattling 
note.” To this we can fully agree. 
The first severe winter weather marks their appearance, 
which is about the first of: December, in the vicinity of Ober- 
lin. I have seen flocks as late as April 23. 
The food is chiefly weed and grass seed and grain, with 
a little insect food intermingled, even in winter. The birds 
are strictly beneficial. 
196. (540.) Poa@cETES GRAMINEUS (Gmel.). 95. 
Vesper Sparrow. 
Synonyms: Pccetes gramineus, Fringilla graminea. 
Bay-winged Bunting, Grass Finch, Gray-bird, Vesper-bird, 
Ground-bird. 
Kirtland, Ohio Geol. Sury., 1838, 164. 
This is our common “Ground Sparrow” so called. It 
does not disdain a_ perch on a fence, nor even a tree, but 
is more often found skulking or running on the ground in 
the grass. The first part of its song is a weak imitation of 
Meadowlark’s usual song. The bird may be readily recog- 
nized by its two white outer tail feathers. 
The food of the Vesper Sparrow varies with the season. 
While it remains in the state it eats more insects than vege- 
table matter, but during the winter it eats seeds and grain 
almost exclusively. During the warmer part of the summer 
its diet is 90 per cent. insect. A large part of the grain eaten 
is undoubtedly gleaned from the stubble, and would be 
wasted if the sparrow did not find it, or spring up in next 
year’s cornfield only to make trouble. The good done in 
the destruction of injurious insects is greater than that of any 
other sparrow. Add to this the weed seeds destroyed dur- 
ing the autumn and you have a strong case for this sparrow. 
Vesper Sparrow reaches Oberlin during the last week in 
March, and is common on the day of arrival, singing lus- 
tily. In a few days the numbers have greatly increased un- 
til almost every other bird seen is of this species. They lit- 
erally swarm over the fields and pastures. As the migra- 
tions progress the numbers are reduced somewhat, but all 
