Dendroeca blackburniae. Maine (Lake Umbagog). 1871. May 30- June 10. Although common this species was not nearly so abundant as the Bay-breasted Black and Yellow and Cape May Warblers. A female shot June 9 had not begun incu- bating. 1872. June 2-5 Very numerous and evidently migrating, small compan- ies being found everywhere, often in thickets and brush piles by the roadside. After June 5 they became settled for the season. 1874. Aug. 6. Shot one in first plumage, and apparently just from the nest, in a mixed flock of Warblers among second growth birch and poplar. " 8. Most of the young are now in full fall plumage. 1876. May 27. Very abundant to-day and I frequently heard six or seven males singing at once. Their song is somewhat like that of Parula and may be represented by the sylla- bles tseop, tseop, tse-tse-$se, with the last three notes on a higher key than the first two. " 29. I noticed to-day that these warblers have retired to the tree-tops, and that each male kept to his own domain and defended it against all invaders. " 30. The weather became suddenly cold again last night and these Warblers were again collected into flocks this morning, keeping near the ground in sheltered, sunny nooks.