Besides the single call-note or the sharp outcry with which the Creepers signalize their movements, and which they utter from time to time as they rapidly and busily move up and down the trunks and limbs, or flit from tree to tree, they have been generally regarded as having no song. But this is not the fact. The careful observations of Mr. William Brewster of Cambridge have satisfied him that these birds have a very distinct and varied song. During the winter these birds are not uncommon in the vicinity of Boston, coming about the houses with all the tameness and confidence of the _Parus atricapillus_, and permit a very near approach. They are very easily attracted by suspending from a piazza a piece of fat meat. Mr. Brewster has observed them commence singing as early as the 14th of March. Their notes are varied and warbling and somewhat confused; some of them are loud, powerful, and surpassingly sweet, others are more feeble and plaintive; their song usually ends with their accustomed cry, which may be represented by _crēē-crēē-crē-ēp_. Mr. Brewster, besides repeatedly hearing them sing in Massachusetts in the early spring, has also listened to their song in Maine in the month of June. Their eggs are small in proportion to the size of the bird, are nearly oval in shape, with a grayish-white ground, sparingly sprinkled with small, fine, red and reddish-brown spots. They measure .55 by .43 of an inch. Certhia familiaris, var. mexicana, GLOG. MEXICAN CREEPER. _Certhia mexicana_, “GLOGER, Handbuch,” REICHENBACH, Handbuch, I, 1853, 265, pl. dlxii, figs. 3841, 3842.—SCLATER, P. Z. S. 1856, 290; 1858, 297; 1859, 362, 372.—SALVIN, Ibis, 1866, 190 (Volcan de Fuego, Guat.).—BAIRD, Birds N. Am. 1858, 373 (under _C. americana_), pl. lxxxiii, fig. 2; Review, 90. SP. CHAR. Ground-color above very dark sepia-brown, each feather with a sharply defined medial streak of grayish-white, these streaks becoming broader posteriorly, where they are discontinued at the beginning of the rump. Whole rump and upper tail-coverts chestnut-rufous. Beneath pale ashy, becoming almost white on the throat; crissal feathers deep ochraceous except at the tips, which are whitish. Markings of the wings as usual. Measurements (8176, Mexico): wing, 2.50; tail, 2.70; bill (from nostril), .48; hind claw, .30. HAB. Guatemala and Mexico; probably extending along the table-lands into the United States.