[8] Length 8½ inches, expanse 20, tail 4, flexure 7¹⁄₁₀, rictus ¹¹⁄₁₂, tarsus ⁷⁄₁₀, middle toe ⁷⁄₁₀.
These birds are doubtless migratory, for we see nothing of them from September to April. They probably winter with the Grey Petchary and the Red-eyed Vireo, in Central America, as they appear with those species about the beginning of April. We can scarcely fail to recognise the period of their arrival; for their manners and voice are so singular, that they force themselves upon our attention. About an hour before the sun sets, we hear a loud, abrupt, and rapid repetition of four or five syllables in the air above our heads, resembling the sounds, piramidig, or gi’ me a bit, or perhaps still more, witta-wittawit. On looking up we see some two or three birds, exceedingly like swallows in figure and flight, but considerably larger, with a conspicuous white spot on each wing. They winnow, however, rather more than swallows, and more frequently depress one or the other side; and the body and tail behind the wings is rather longer. Their general appearance, their sudden quick doublings, their rushing, careering flight, and their long, narrow, arcuated wings, are so like those of swallows, that after being familiar with them, I have often been unable to determine at the first glance, whether a particular bird were a caprimulgus or a swallow. Like them the Piramidig is pursuing flying insects; and though the prey, from its great height, and probably its minute size, is invisible from the earth, we may very often observe that it is captured, by a sudden arresting of the career, and by the swift zigzag dodgings, or almost stationary flutterings, that ensue. I do not think the prey is ordinarily larger than minute diptera, hymenoptera, and coleoptera; for I have not been able to detect anything flying where these birds were hawking, even when their flight was sufficiently low to allow of insects as large as a bee being distinctly seen. “Mosquito hawk,” is one of the appellations familiarly given to the bird, and doubtless not without ground. I am confirmed in this supposition, by the fact that swallows, whose prey is known to be minute, are usually hawking in the same region of the air, and in company with the Piramidigs. By the term “company,” however, I must not be understood as implying anything like association, which does not seem to exist even between these birds themselves; they are usually solitary, except inasmuch as several, hawking over the same circumscribed region, must often come into close proximity; but this seems, in general, neither sought nor avoided; each swoops on its own course, regardless of his momentary neighbour. Yet the tender passion sets aside even the most recluse solitariness in any animal; and to this I attribute it that now and then I have seen one Piramidig following another in close and pertinacious pursuit, ever and anon uttering its singular cry, and evidently desiring to come into contact with, but not to strike or hurt its coy companion. I would not assert from hence that the nuptials of this species are performed upon the wing, because the premises are too slight to decide so important a fact; but it is known that it is so with the European Swift, a bird whose manners greatly resemble those of our Night-hawk.
It is when the afternoon rains of the season have descended plentifully, that these birds are most numerous, and most vociferous; and they continue to fly till the twilight is beginning to fade into darkness. After this, they appear for the most part to retire, and the strange and startling voices, that before were sounding all around and above us, are rarely heard by the most attentive listening. A lad informed me that when out fishing during the night, not far from the shore, the canoe is often surrounded by bats, which make a great noise. But my assistant, Sam, who heard the statement, assured me that these were not bats, but Piramidigs, (with some bats, however, in the company), and that these birds, when the moon is at or near the full, continue on the wing through the night.[9] On dark rainy days, such as we get sometimes in May, I have seen and heard two or three abroad even in the middle of the day, careering just as at nightfall.
[9] I may be permitted here to record a tribute of affection to this faithful servant, Samuel Campbell, whose name may often appear in this work. A negro lad of about eighteen, with only the rudiments of education, he soon approved himself a most useful assistant by his faithfulness, his tact in learning, and then his skill in practising, the art of preparing natural subjects, his patience in pursuing animals, his powers of observation of facts, and the truthfulness with which he reported them, as well as by the accuracy of his memory with respect to species. Often and often, when a thing has appeared to me new, I have appealed to Sam, who on a moment’s examination would reply, “No, we took this in such a place, or on such a day,” and I invariably found on my return home that his memory was correct. I never knew him in the slightest degree attempt to embellish a fact, or report more than he had actually seen. He remained with me all the time I was in the island, and was of great service to me. Many of the subjects of this work were obtained by him, when I was not myself with him, and some which I believe to be unique.
Early in the morning, before the grey dawn has peeped over the mountain, I have heard over the pastures of Pinnock Shafton, great numbers of these birds evidently flying low, and hawking to and fro. Their cries were uttered in rapid succession, and resounded from all parts of the air, though it was too dark to distinguish even such as were apparently in near proximity. Now and again, the hollow booming sound, like blowing into the bung-hole of a barrel, produced at the moment of perpendicular descent, as described by Wilson, fell on my ear.
The articulations or syllables, if I may so say, which make up the note, are usually four, but sometimes five, or six, uttered as rapidly as they can be pronounced, and all in the same tone. The Chuck-will’s-widow and the Whip-poor-will of the northern continent derive these names from a rapid emission of certain sounds not very dissimilar to those of the bird under consideration. The cry is uttered at considerable intervals, but without anything like a regular recurrence or periodicity.
Whither the Piramidig retires after its twilight evolutions are performed, or where it dwells by day, I have little evidence. The first individual that fell into my hands, however, was under the following circumstances. One day in the beginning of September, about noon, being with the lads shooting in Crab-pond morass, Sam called my attention to an object on the horizontal bough of a mangrove-tree, which he could not at all make out. I looked long at it, also, in various aspects, and at length concluded that it was a sluggish reptile. It was lying lengthwise on the limb, close down, the head also being laid close on the branch, the eyes wide open, and thus it remained immovable, though three of us were talking and pointing towards it, and walking to and fro under it, within a few yards. The form, in this singular posture, presented not the least likeness to that of a bird. At length I fired at it, and it fell, a veritable Night-hawk! The reason of its seeking safety by lying close, rather than by flight, was probably the imperfection of its sight in the glare of day, from the enormous size of its pupils: but the artifice showed a considerable degree of cunning.
An intelligent person has stated to me that early in the morning, where a perpendicular face of rock about twenty feet high rises from the hilly pastures of Mount Edgecumbe, he has seen these birds leave what seemed to be nests, built in the manner of some swallows, on the side of the rock, near the top. But I strongly suspect he is mistaken in the identity of the bird. One day, at the end of July, as I and Sam were following Baldpate Pigeons on some very stony pasture at Pinnock Shafton, much shaded with pimento and cedar-trees, we roused a bird of this family, and, I think, of this species, which started from the ground near our feet, and fluttered in an odd manner, inviting our attention. I was aware of her object and began to search carefully among the loose stones for a young bird, or an egg, but could discover neither, though I have no doubt either the one or the other was not far off. I have been told that it habitually chooses for its place of laying, the centre of a spot where a heap has been burned off in clearing new ground; perhaps on account of its dryness.
In some “Notes of a Year,” published in the Companion to the Jamaica Almanack, Mr. Hill had used the term, “triangular,” in connexion with the flight of this bird. In reply to a question of mine, on the subject, he thus writes: “I send you a diagram of the flittings about of the Goatsucker. It illustrates my allusion to the triangular flight of the bird. This peculiar cutting of triangles struck my attention, when I was watching the morning flight of some three or four Goatsuckers, just at day-dawn, while I strolled through the pastures of a pen in St. Andrew’s, where I was visiting. The morning twilight had spread a clear glassy gloom over the whole cloudless expanse around and above me; and as no direct ray shone on the woods and fields, which lay silent and sombre beneath,—the flitting birds were seen distinctly, like dark moving spots against the grey sky. I was struck with the sudden shifts by triangles which they were seen to make. They never moved very far from one to another direction, but darted backward and forward over a space of some five hundred yards, preserving a pretty constant horizontal traverse, over some trees in a near pasture, whose honeyed fragrance on the morning air told that they were in blossom. Occasionally only, they rose and sank so as suddenly to change their elevation above the clumps of foliage. Yarrell observes that Goatsuckers are remarkable for beating over very circumscribed spaces; but I have not found any one who notices their cutting in and out by triangular shifts. It is not so perceptible in the obscurity of the evening, but in the perspicuousness of day-dawn it is plainly visible; and I made a note of it, and dotted in the angular appearance at the time.”
In some parts of Jamaica this bird bears the appellation, most absurdly misapplied, of “Turtle-dove:” it is occasionally shot for the table, being usually fat and plump. It is a very beautiful bird. The stomach, protuberant below the sternum, is a large globular sac; the other viscera are small. Of one which I dissected, shot in its evening career, the stomach was stuffed with an amazing number of insects, almost (if not quite) wholly consisting of small beetles of the genus Bostrichus: there were probably not fewer than two hundred of these beetles, all of one species, about a quarter of an inch long.