Bulletin - United States National Museum . departure are about the same. It is perhaps fonder of swampy PASSERES OSCINES TURDID.E. 35 places. This interesting species was first shown to belong- to the east-ern Avifauna by ourselves (see Pr. Phila. Acad. Nat. Sci., Aug., 1861, p.217).  6. (46.) Turdus ustulatus swainsoni (Cab.) Coues. (T. swAinsonipi the originaledition.) Eastern Olive-backed Thrush. A spring and autumn migrant; does not breed here. The mostabundant of the Thrushes, excepting perhaps the Hermit; we have seenthem in considerable tlocks in the fall. Arrives the second week in
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