The Fish Crow of the Atlantic States is readily distinguishable from the common Crow by the much smaller size (16 inches instead of 20; wing,
about 11 inches instead of 13); the bill is broader at the base and tapers more rapidly to the end; the middle toe and claw are longer than the scutellate portion of the tarsus, not shorter, the inner claw not reaching to the base of the middle one. The tail is less rounded. The gloss on the belly is green instead of violet; that on the back is mixed with green, not entirely violet.
Habits. The Fish Crow of Eastern North America has a distribution restricted to the Southern Atlantic and the Gulf shore. It is found in the States of New Jersey, Pennsylvania, Maryland, Delaware, Virginia, the Carolinas, Georgia, and Florida, and, according to Audubon, thence to the mouth of the Mississippi. West of that river it appears to be very rarely met with. Dr. Würdemann obtained it at Calcasieu, La. Mr. Allen, in a list of the birds of Massachusetts, published in 1864, names this species as an occasional visitor along the southern coast of that State, but I am not able to find any corroboration of the statement, and believe it to be a mistake. Dr. De Kay, in his Report on the birds of New York, states that this Crow is occasionally seen on the shores of Long Island, but Mr. Lawrence is confident that it never occurs farther north than Squaw Beach, in New Jersey. So, too, Mr. Townsend is quoted by both Audubon and Nuttall as authority for its occurrence on the Columbia River, of which we have no confirmation.
This species was first described by Wilson, who met with it and observed its habits on the sea-coast of Georgia. In some respects its habits were the exact reverse of those of the common Crow, as the former regularly retired at evening into the interior to roost, and came down to the shores of the river Savannah, on the first appearance of day, to feed. Its voice first attracted his notice; there was something in it very different from the utterances of the Crow, being more hoarse and guttural, and more varied in its modulations. The mode of flight was also observed to be quite different, as the Fish Crow occasionally soars about in the manner of the Raven and of Hawks, without flapping its wings,—a flight which the Crow is never observed to make, and is probably not able to execute.
The food was also observed to be unlike, as well as the manner of procuring it. The favorite haunt of this species seemed to be the banks of the river, up and down which they soared, and in a very dexterous manner snatched up with their claws dead fish, or other garbage found floating on the surface. This Crow was also seen to perch frequently on the back of cattle, in the manner of the Jackdaw of Europe. It was never seen to mingle with the common Crows; and never, like the latter, roosts among the reeds and marshes near the water, but always seeks the shelter of the woods, in which to pass the night.
Afterwards, in his journey near the Mississippi, Wilson observed the same birds frequenting the borders of rivers and ponds, and feeding on the reptiles found in those waters. They were close attendants upon the cow-yards, and were more solitary, but much less shy and suspicious, than the common Crow. This species was also observed by Wilson in Cape May County, New
Jersey, and in the regions bordering on the Schuylkill and the Delaware, near Philadelphia, during the shad and herring fishing, or from March till June.
During the breeding-season they were observed to separate into pairs, and to build their nests in tall trees near the sea or the river shore. One of their nests was in a tall wood at Great Egg Harbor, and they were presumed to have four or five young at a time.
In the District of Columbia, Dr. Coues found the Fish Crow to be an abundant resident throughout the year, less wary and suspicious than the common Crow, and more confined to the borders of rivers. It was generally confounded with C. americanus.
The Fish Crow appears to have received, even if it does not merit, an exemption from the general unpopularity of its race. It is generally believed to be at least a harmless species, and in its destruction of reptiles and vermin to be even beneficial. This belief, we apprehend, is for the most part well founded. Yet Mr. Audubon accuses these Crows of entering gardens and feeding upon the best fruits. He also states that, near Charleston, they commit such depredations upon the ripe figs, and become so troublesome generally in the gardens, that it is often found necessary to station a man near the fig-trees to shoot and destroy them.