Mr. Audubon met with them, during autumn and winter, among the flat sand-bars of the Mississippi, which are overgrown with rank grasses. Though not in flocks, their numbers were immense. They fed on grass-seeds and insects, often wading for the latter in shallow water in the manner of the Tringidæ, and when wounded and forced into the water swimming off to the nearest shelter. He also met with these birds abundantly dispersed in the swamps of Cuyaga Lake, as well as among those along the Illinois River in the summer, and in the winter up the Arkansas River.
Mr. Townsend observed these birds on the head-waters of the Upper Missouri, but did not meet with them beyond.
In Maine, Mr. Boardman gives it as a regular summer visitant at Calais, arriving there as early as March, becoming common in May, and breeding in that locality. Professor Verrill found it in Western Maine, a summer visitant and breeding, but did not regard it as common. From my own experience, in the neighborhood of Boston, I should have said the same as to its infrequency in Eastern Massachusetts, yet in certain localities it is a very abundant summer resident. Mr. William Brewster has found it breeding in large numbers in the marshes of Fresh Pond, where it arrives sometimes as early as the latter part of March, and where it remains until November. In the western part of the State it is more common as a migratory bird, and has not been found, in any numbers, stopping to breed. Mr. Allen never met with any later than May 25. They were observed to be in company with the Water Thrush, and to be in every way as aquatic in their habits. In the autumn he again met with it from the last of September through October, always in bushy marshes or wet places. Mr. McIlwraith states that in the vicinity of Hamilton, Ontario, it is a common summer resident, breeding
there in marshy situations. At Lake Koskonong, in Wisconsin, Mr. Kumlien has also met with these birds abundantly in suitable localities, and found their nests and eggs quite plentiful.
Mr. Ridgway has recently found this Sparrow to be a very abundant winter resident in Southern Illinois, where it inhabits swampy thickets, and where it remains until May, but is not known to breed there.
They always nest on the ground, usually in a depression sheltered by a tuft of grass. The nest is woven of fine grass-stems, but is smaller than the nest of M. melodia.
The eggs of this species, usually five in number, have an average measurement of .78 by .60 of an inch. Their ground-color is usually a light green, occasionally of a light clay, marked and blotched with reddish and purplish brown spots, varying in size and number, occasionally forming a confluent ring around the larger end.
Genus PEUCÆA, Audubon.
Peucæa, Aud. Synopsis, 1839. (Type, Fringilla æstivalis.) Sclater & Salvin, 1868, 322 (Synopsis.)
