The Fish Crow is confined either to the maritime districts or to the banks of rivers branching from them. Audubon states that they ascend the Delaware to quite a distance, and that some breed in New Jersey every year, but that all retire to the South on the approach of cold weather. Some go up the Mississippi to the distance of five hundred miles, but return to the seashore in the winter. In East Florida, where they were very abundant, Mr. Audubon found them breeding in February, in South Carolina on the 20th of March, and in New Jersey a month later. On the St. John’s River, during February, he saw them in flocks of several hundred, but all seemed mated and to move in pairs, sailing high in the air in the manner of Ravens. After these aerial excursions the whole body descended to the water’s edge to feed. When their fishing was over, they would alight in flocks on the live-oaks near the shore, and there keep up their gabbling, while they plumed themselves, for hours. They then returned to their fishing-grounds, where they remained until near sunset, moving into the interior to great distances, to roost on the loblolly-pines. These retreats were made in silence, but their return to the sea-shore in the early morning was made with noisy and lively demonstrations. They were then to be seen among the bays, rivers, salt ponds, and marshes, searching for small fry, and picking up any garbage they might find.
Mr. Audubon also accuses them of robbing other birds of their eggs and young. This was especially observed on the Florida Keys, where they even dared to plunder the nests of the Cormorants and White Ibis. They feed largely on the small crabs called fiddlers, which they pursue and easily capture in their burrows. He has also seen them attack and pursue small Gulls and Terns, and attempt to make them disgorge the fish they have caught; but
as the flight of the latter is swifter, they are frequently unsuccessful in these attempts at robbery. This Crow can catch living fish with considerable dexterity, but cannot feed while on the wing.
During the winter and early spring, Mr. Audubon states that these birds feed on various kinds of berries, especially those of the Ilex cassina and of the common holly, and those of the exotic tallow-tree, now so common near Charleston (Stillingia sebifera). In January and February these trees are much resorted to by the Crows, who greedily devour their white and oily seeds.
Mr. Audubon found these birds breeding generally on moderate-sized trees of the loblolly-pine, building their nests towards the extremities of the branches, about twenty feet from the ground. The nests are smaller than those of the Crow, and are built of sticks, lined with dry grasses and moss, and neatly finished with fine fibrous roots. The eggs are five or six in number, and resemble those of the Crow, but are smaller.
Two eggs of this species, from St. Simon’s Island, measure, one 1.50 in length by 1.10 in breadth, the other 1.52 by 1.09. Their ground-color is a light blue with a slight greenish tinge, marked over the entire egg with small blotches of a light brown. An egg from Great Egg Harbor, obtained by Wilson, from the old Peale Museum, and which may be a faded specimen, has no tinge of blue or green, but a ground of pinkish-gray, marked with smaller blotches and cloudings of dark drab. It measures 1.46 inches in length by one inch in breadth.
Genus PICICORVUS, Bonap.
Picicorvus, Bonaparte, Consp. Av. 1850, 384. (Type, Corvus columbianus, Wils.)
Picicorvus columbianus.