12 UPTON, MAINE 1871 early morning and just at sunset. So shy and retiring were they that we did not take a single specimen, and on only one occasion did I succeed in so much as catching a sight at one. (Found a pair of T.aedon breeding in a hole in a hole in a birch stump in the woods at Bethel.) 58. Certhia Americana. Quite frequent in pairs, and probably breeding. Heard the males sing as in Massachusetts on several occasions. 59. Sitta Canadensis. Rather common though very silent and retiring. (S.Carol. as far up as Barth 60. Parus atricapillus. Common though extremely quite and inconspicuous: found two nests in birch stumps one June with five and the other June 9th with four fresh eggs. 61. Capodacus purpureus. Much to our surprise found them everywhere very common in the depths of the woods where the males usually sang from the top of some tall spruce. 62. Chrysomitris tristis. Common. 63. Chrysomitris pinus. Common. 64. Curvirostra Americana. Saw a small flock June 4th and a single bird June 5th. 65. Passerculus savanna. Found it abundant in the mowing fields and grassy meadows all the way up from Bethel, and sparingly on the hilly stump-filled pastures at Upton. 66. Poocaetes gramineus. Frequent in the high open pastures. 67. Zon. albicollis. Common and one of the most beautiful songsters of the region: we heard its exquisite melody frequently as late as 10 o'clock P.M. Found in all three nests, built