After some difficulty, I fixed my glass upon a number of little sparrows about the size of the chippies. They bore a close resemblance to that species too, save that the crown-piece and the general tone of the back were decidedly darker, while the under parts were a good deal whiter. The clear, ash-colored cervical interval between the crown and the back and the distinct brown loral and auricular space told me plainly who the little charmers were. Not at the moment, however, for the birds were new to me, and I had to wait until I could consult my manual before I was able to decide that they were the clay-colored sparrows.
Their song is an odd vocal performance--a low, croaking trill, preceded by a few longer notes, all delivered in the same key. It is, in fact, a contralto solo divided into brief stanzas, and easily might be mistaken for the grating buzz of an insect, especially if heard at a distance of a few rods. It possesses little or no musical quality, and is perhaps the most curious style of bird minstrelsy with which I am acquainted. In comparison the chippie's trill sounds loud and clear and bell-like, with a distinctly melodious quality of tone. The song of the little clay-colored sparrow is also marked by a kind of drawl, giving one the impression that the bird is just a little too lazy to exert himself; yet when you get him in the field of your glass and see him throw back his head, expand his throat and chest, and open his mandibles as wide as he can, you quickly decide that he is not the apathetic creature his desultory song would lead you to infer. It really is laughable, and almost pathetic, too, to note how much energy he expends in the production of his poor little aria.
Indeed, not in the least sluggish is the blood flowing in the veins of _Spizella pallida_, for he is a vivacious little body, flitting about actively in the hedges and bushes, and sometimes mounting into the trees, chanting his little alto strain all the while, as if his life depended upon it. He is one of the comparatively few birds who is lavish of his song in migration.
Unlike the familiar chippie, he does not usually find a perch in plain sight, from which to rehearse his song, but keeps himself well hidden in the bushes or trees, darting into a hiding place as soon as he thinks himself discovered. The shy little imp prefers to put a screen of foliage or twigs between himself and the observer. Might his motto be, "Little birds should be heard and not seen"? I had quite a time making sure of him, but, as a pleasant compensation, when his identity was once settled, I could not well have mistaken him for another species, for he is a bird of real distinction.