In aliciæ, no difference is observed between Eastern and Western birds; the reason is, probably, that the breeding-ground of all is in one province, though their migrations may extend over two. There is, however, a marked difference between the spring and autumn plumage; the clear grayish of the former being replaced, in the latter, by a snuffy brown, or sepia tint,—this especially noticeable on wings and tail.
PLATE I.
1. Turdus mustelinus, Gm. Pa., 1570.
2. Turdus ustulatus, Nutt. Oregon, 2040.