_Oporornis agilis. Case 8, Figs. 77, 78_
A complete white eye-ring; male without black on
the gray breast. L. 5-1/2.
_Range._ Nests in the interior from north Michigan
to Manitoba; winters in the tropics.
Washington, T.V., very rare in spring, May 24-30;
common from Aug. 28-Oct. 24. Ossining, rare T.V.,
Aug. 26-Oct. 9. Cambridge, fall T.V., sometimes
locally abundant, Sept. 10-30. N. Ohio, tolerably
common T.V., May 7-24. Glen Ellyn, fairly common
T.V., May 12-June 28; Aug. 14-Sept. 22. SE. Minn.,
uncommon T.V., June 1.
In the Atlantic Coast States this Warbler is found only as a fall
migrant, at times in considerable numbers. It lives on the ground in or
at the border of woods usually where there is dense undergrowth, and
would easily escape observation were it not for its sharp call-note,
_peek_, by which it may be identified. Its song, heard only on its
migrations up the Mississippi Valley and on its nesting ground, has been
described as resembling that of both the Oven-bird and Maryland
Yellow-throat. The only nest recorded was found by Ernest Seton near
Carberry, Manitoba, June 21, 1883. It was on the ground and contained 4
eggs, white with a few spots about the larger end.