Dendroica castanea. Lake Umbagog, Maine. copy D Nest and eggs. 1896. In the afternoon visited the Warbler's nest in the bal- June 7. sam on Mason's knoll - the nest that we left with 4 eggs yester- day. It had 5 eggs to-day and a female Bay-breast was sitting on them. Shaking and pounding the tree did not seem to dis- turb her but every 15 or 20 minutes she would leave the nest of her own accord and ramble about among the neighboring tree tops, feeding, returning to her eggs after an absence of 4 or 5 minutes. Once while on an excursion of this kind she was joined by the male who brought her an insect of some kind in his bill and gave it to her. She accepted it with apparent indifference but at once ate it. The male is the bird who sings in the hemlock 30 yards away. After photographing this nest we secured it with the eggs. The pair of Bay-breasts flitted about some distance off while Watrous was despoiling them but as soon as he came down from the tree the female began searching for her nest examin- ing all the neighboring branches carefully and hovering in the air at the place where the branch with the nest had been.