9 UPTON, MAINE 1871 40. D. Blackburniae. Common. Affected the mixed woods where both sexes kept always in the tops of the highest beech and birch trees. A female taken June 9th showed no signs of approaching incubation and they probably breed very late. The song of the male was short and unmusical ending in a high trill This Warbler though abundant was scarce in comparison with D.castanea, maculosa and tigrina. 41. D.castanea. Extremely abundant, in fact the most so of any bird in the region. Affected principally the mixed woods, though found everywhere except in some of the cedar swamps. Kept always in the very tops of the highest spruce trees, and would frequently sing fifteen minutes or more in one place with- out apparently moving or exposing itself to view, and was ac- cordingly a very hard bird to shoot. Slow and sluggish in all its motions like D.striata, it was never found encased in fat like that bird. We very seldom saw them in any of the decidu- ous trees. Their song was a shrill feeble sheeping note, re- peated three or four times and varying considerably in different individuals, sometimes scarcely distinguishable from the ze-ze- ze of Regulus satrapa, at others more musical and warbling like that of S.ruticilla. Their nests of which we found several, were very large and bulky and scarcely distinguishable from that of Car.purpureus. All were built in spruce trees on hori- zontal boughs near the extremity, at the height of about twenty feet: one taken June contained two, another June 9th tree fresh eggs.