Egg of Coc. Am. in nest of C. erythroptalum, Nest of Pyrranga Rubra Middlesex Co., Mass. 151 June 14 allowed me to pass the leaves within Two inches of the nest before she started off. The male was singing just not about 20 yds off. When the ♀ fairly realized that her domicile was discovered she commenced an angry chatter in very much the same key as Mrs. Redon but the male kept on singing meanly curndly and did not put in his appearance with his mate. Continuing one found a nest of Coc. erythroptalum with two eggs of that bird & one of C. Americanus. All three eggs were fresh and each was pierced by a small hole in the side but the contents still intact. The identity of the nest was established beyond doubt by numerous tail and wing feathers of the parent lying in and about it. Evidently the sitting bird had been seized and devoured on the spot by some rapacious bird, probably an owl, and the eggs left without a protector, were pierced by a jay or other bird. Next visited the Pyrranga's nest found on the 5th inst. and found the ♀ sitting on 4 eggs. She allowed me to climb nearly to the nest before starting off when she down almost perpendicularly to the ground and made off with her wings & sprad tail. Soon she appeared with her mate and both set off an angry chip chase which they continued to long as I remained in the vicinity. Charles took me up at 1 and I started