314 MASS. (Middlesex Co.) 1876. (April 29) Assols Virio solitarius an & Brinsea W. Muscicapa garrula y. as Vinton (Ap. 28) C.G. Nest building of Pirus atricapillus in silence and flew when I came under the tree and flew away through the trees as stealthily as possible. Spent the whole forenoon hunting through the woods for hawks nests & the orchards for owl but found absolutely nothing excepting a chadue's nest which from the peculiarity of the situation merits a few remarks. I was standing still in an oak grove when I heard a dull tapping almost at my feet & looking clerly saw a chickadee emerge from the top of stump with a mouthful of cotton fibre which she flew off some distance with before dropping, going up to examine the oak nest more closely. I found that the bark had started off from one side of the stump (an oak) 20 in. high x 6 in. diameter) leaving a small space between it and the other wood. Entering at the top, the birds had worked at first in a little then downward until the cavity became deep than the indirect rays of light would penetrate. The little fellow soon came back and put bridle to work again. Regarding my own proficiency in the best Saw a number of D. Palumbus (now) few D. juncia and a number of B. Calandula; tho first & last an unusually abundant this year. Assols our Muscicapa garrula an & Virio solitarius on 6 both migr. One each of them were also seen by Mr. Cope in Brookline. Saw a few Lar. Albicollis but Mr. Maynard tells me he saw them April . Then was a great arrival of