Vireo philadelphicus. Maine (Lake Umbagog). 1879. May 27. Shot a pair evidently mated. When first seen they were in an isolated cedar in the bog behind the bark. Shortly afterwards they flew to a birch near the house, the female closely following her mate both on wing and among the branches. The male was shot first when the female descended to him slowly hopping from twig to twig and looking down with evident solicitude. I heard only two notes, a soft tender pseudo, similar to that of the Red-eyed Vireo when mating, and a harsh, petu- lent cry exactly like that of the Warbling Vireo. This species is scarce distinguishable in motion and appear- ance when in the trees from Vireo gilvus (June 5) Identified the song of this species to-day by shoot- ing the bird in the act. The song is very close to that of Vireo olivaceous but some of the notes are feebler. " 6. Heard singing at the lower settlement on the Megal- laway. " 9. In an open grove of poplars and birches in front of the Dix House, Dixville Notch, I watched a pair of those Vireos for nearly an hour. They kept very near together the male singing at intervals (his song as previously noted at Upton). They were apparently not nesting. " 10. The pair noted yesterday came close to the Dix House this morning; although it was raining hard the male sang cheerfully at intervals. In motion these Vireos are indistinguishable from Vireo olivaceous and V.gilvus. " 11. One singing near the boat-landing on Cambridge Ri- ver. " 13. One singing above the mill, another on B Point. They sing much in the tops of the highest trees. The one on B Point was in the crest of a mighty yellow birch at least eighty feet above the ground where the branches where the branches were lashed by the fierce wind that flouted the leaves and swayed the whole tree-top, yet the bird rarely ceased his notes when the fiercest gusts swept by. I can now readily distinguish the song of this species from that of the Red-eye; it is feebler, higher pitched, and does not flow as smoothly. " 19. I know of two pairs breeding within a mile or two of the Lake House.