Corvus ossifragus
Order Passeriformes
Family Corvidae
Adult.— Entire bird black, with blue or purplish reflections at close range.
Nest, of sticks, in trees, generally in evergreens.
Eggs, like those of the common Crow.
The Fish Crow is a common permanent resident of the lower Hudson Valley, and occurs regularly but not commonly along the coast of Connecticut, as far east as Stratford. It has been taken at Springfield, Mass., but is probably very rare north of Long Island Sound; in fact, it is almost always found near the sea or on large streams. Though the Fish Crow is smaller than the Common Crow, it is very difficult to distinguish it by the size alone, but its car is distinctive; it is higher, more nasal, and less powerful than the caw of the common Crow.
Hoffmann – A Guide to the Birds of New England and Eastern New York (1904)