_Hylocichla ustulata swainsoni. Case 8, Fig. 81_
Upperparts uniform olive; eye-ring buff; breast
and sides of the throat deeper than in the
Gray-cheeked Thrush. L. 7-1/4.
_Range._ Nests from northern Michigan and northern
New England northward into Canada and southward in
the mountains to West Virginia; winters in the
tropics.
Washington, common T.V., Apl. 19-June 2; Sept.
2-Nov. 1. Ossining, tolerably common T.V., May
2-30; Sept. 19-Oct. 22. Cambridge, common T.V.,
May 13-28; Sept. 15-Oct. 5. N. Ohio, common T.V.,
Apl. 22-June 13; Sept. 2-Oct. 24. Glen Ellyn,
common T.V., Apl. 23-June 6; Aug. 16-Oct. 24. SE.
Minn., common T.V., May 1-; Sept. 25-.
We know this Thrush chiefly as a migrant when, in the latter part of
May, and again in September and October, it passes us _en route_ to and
from its northern home. At these seasons we may even hear its whistled
_puit_ from the sky as it journeys through the night. "Its song," Dwight
says, "lacks the leisurely sweetness of the Hermit Thrush's outpourings,
nor is there pause, but in lower key and with greater energy it bubbles
on rapidly to a close rather than fading out with the soft melody of its
renowned rival."
The Olive-back nests in bushes or low trees, and lays 3-4 greenish blue
brown-spotted eggs in June.