Crotophaga ani.
Sp. Char. Bill at the nostrils nearly twice as high as broad; the nostrils elliptical, a little oblique, situated in the middle of the lower half of the upper mandible. Gonys nearly straight. Indications of faint transverse wrinkles along the upper portion of the bill, nearly perpendicular to the culmen. Legs stout; tarsus longer than middle toe, with seven broad scutellæ anteriorly extending round to the middle of each side; the remaining or posterior portion of each side with a series of quadrangular plates, corresponding nearly to the anterior ones, the series meeting behind in a sharp ridge. The wings reach over the basal third of the tail. The primary quills are broad and acute, the fourth longest; the first about equal to the tertials. The tail is graduated, the outer about an inch and a half shorter than the middle ones.
The color generally is black, with steel-blue reflections above, changing sometimes into violet; duller beneath. The pointed feathers of the head, neck, and breast, with a bronzy metallic border, appearing also to some extent on the wing-coverts and upper part of back. Iris brown. Length, 13.20; wing, 6.00; tail, 8.30; tarsus, 1.48.
Hab. West Indies; South Florida. Accidental near Philadelphia. Localities: Sta. Cruz (Newton, Ibis, I, 148).
As already remarked, we do not find reason to admit more than one species of Crotophaga in the United States and the West Indies, as in the great variation in size, and to some extent in shape of bill, there is nothing constant. The species can hardly be considered more than a straggler in the United States, although a considerable number of specimens have been seen or taken within its limits. That in the Smithsonian collection was killed on the Tortugas; but there is one in the collection of the Philadelphia Academy, killed near Philadelphia by Mr. John Krider, and presented by him. Mr. Audubon also possessed a pair said to have been killed near New Orleans.
Habits. This species, the common Savanna Blackbird of the West India Islands, is probably only an accidental visitant of the United States, and may not strictly belong to the avi-fauna of North America.
It is common throughout the West Indies, and in South America as far south as Brazil. Gosse states it to be one of the most abundant birds of Jamaica. In speaking of its breeding habits he mentions that it was universally maintained by the inhabitants that these birds unite and build in company an immense nest of basket-work, made by the united labors of the flock. This is said to be placed on a high tree, where many parents bring forth and educate a common family. This statement is reiterated by Mr. Hill, who says that a small flock of about six individuals build but one large and capacious nest, to which they resort in common, and rear their young together.
In July Mr. Gosse found the nest of one of these birds in a guazuma tree. It was a large mass of interwoven twigs, and was lined with leaves. There were eight eggs in the nest, and the shells of many others were scattered beneath the tree.
Mr. Newton found these birds very common in St. Croix. He mentions meeting with a nest of this species June 17. It was about five feet from the ground, on a large tamarind-tree. He speaks of it as a rude collection of sticks and twigs, large and deep, partly filled with dry leaves, among which were fourteen eggs, and around the margin were stuck upright a few dead twigs of tamarind. Five days afterwards he went to the nest, where he found but nine eggs, two of which he took. Three days later he found but four eggs in the nest, it having been robbed in the interim; but six days afterwards the number had again been increased to eight. He never found the eggs covered up as if intentionally done. The nest was evidently common property. There were generally two or three birds sitting close to or on it, and up in the tree perhaps four or five more, who would continue screeching all the time he was there. Mr. Newton adds that when the egg is fresh the cretaceous deposit on the shell is very soft and easily scored, but it soon hardens. It is mentioned in De Sagra’s list as one of the common birds of Cuba.
Mr. J. F. Hamilton, in his interesting paper (Ibis, July, 1871) on the birds of Brazil, mentions finding this species very common at Santo Paulo. There was scarcely an open piece of ground where there were but few bushes that had not its flock of these birds. They were especially fond of marshy ground. They were also often to be seen running about among a herd of cattle, picking up the insects disturbed by the animals. They seemed utterly regardless of danger, and would scarcely do more than flit from one bush to another, even when the numbers of their flock were being greatly thinned. When concealed in the long grass, they would allow themselves to be almost trodden on before rising. The Brazilians seldom molest them, as their flesh is not good to eat.