LIST. 91 



July 25, 1886, 1 egg in American Goldfinch, .and 5 eggs of the lat- 

 ter bird. 



May 29, 1887, 1 egg in Red-eyed Vireo. 



June 4, " 1 egg in Yellow Warbler, and 4 eggs of the latter 



bird . 



" 18, " 1 egg in Indigo Bunting, and 2 eggs of the latter 

 bird, all incubated. 



May 25, 1839, 1 egg in Chipping Sparrow, and 1 egg of the latter 



bird. 

 " 22, 1890, 1 egg in Red-eyed Vireo's old nest, egg fresh. 



July 7, 1891, 1 egg in Chipping Sparrow. 



June 27, 1892, 1 egg in American Redstart, and 3 eggs of the 

 latter bird . 



I have observed nests of the Yellow Warbler, 

 rebuilt on top of the first nest which contained an 

 egg of the cowbird, while other species of birds 

 appear to adopt the imposers eggs and raise the 

 young cowbirds with as much attention as their 

 own offspring. Why the cowbird does not build 

 a nest and rear its own offspring, is a most remark- 

 able fact, and unaccountable, but has its counter- 

 part in the European Cuckoo, which deposits its 

 eggs in other bird's nests. The American Cuckoos 

 build their own nests, and rear their young like 

 other birds. I have seen the cowbird here in the 

 spring of the year on the 12th April, but I have 

 not observed any in the autumn, and I presume 

 they leave this district before the latter season 

 begins. 



Genus Agelaius. Vieillot. 



159. Red-winged Blackbird. A. phoeniceus. (Linn.) 

 " Summer Resident," abundant. Breeds on the 



