138 MASS. (Middlesex Co.) 1875 June 3 Wests of Hsingailes mac, Pipilo, Coccyzus ery. D. Pennsylvanicus Middlesex Co., Mass. Clear but rather cool with fresh S. & E. wind. Rose at 6 and got off as soon as possible, Charles drove me up to the Wellington lawn when I took the three nests found & left on May 81 and put them home in the buggy. They contained Skin, macularius, Leg. - Pipilo, 3, Coccyzus erythrusp. 5; The latter birds must have laid Eggs between Monday at 11 A. M. and Thursday at 6 A. M. This I have had happen with the other species which deposited Eggs between 7:30 A. M. and 7 the previous evening or in 9 1/2 hours. The Hsingailes sat very close and simulated lameness more perfectly than before. From here struck across country towards Belmont reaching the spring near Poplar St. by noon and taking lunch there. On the morning found three nests of D. Pennsylv., two with 2 eggs each, the other with 1 egg & 1 of the cowbirds. After D. Penns. is a very close sitter; one may almost touch head on the nest before the bird start: She & usually sings within less than 100 yds of his mate I went, found and took two nests of Coccyzus erythrusp. The first with 5 eggs, the 2nd with three. In all these nests taken to day, one egg was incubated consider- ably while the others were quite fresh. A fresh Cuckoo's egg blows like a rotten egg, white yolk & all came out mixed together in cream against; incubated a few days the white (bo called) becomes quite hard and is of a glass gray color. One of these nests was so small and flat that the eggs seemed on the point of rolling out or rather off. The birds always quit close, and entered the usual over-troop after being frightened.