Part 27

Skylark, song of, 32-34, 37; in America, 33, 34; Scotchman and, 33; Irishman and, 34; wooing a vesper sparrow, 40; a caged, 69.

Snake, black, 16.

Snakes, and the power of fascination, 16.

Solitude, its effect on individuality, 118, 119.

Sparrow, bush, or field sparrow (Spizella pusilla), nest of, 259.

Sparrow, chipping (Spizella socialis), nest of, 142, 143, 259, 154; an unusual song of, 259.

Sparrow, English (Passer domesticus), singing like a canary, 68, 257; eggs of, 120; a case of blind instinct in, 160.

Sparrow, song (Melospiza cinerea melodia), a city girl's impression of its song, 31; a talented singer, 45; the "Hermit's" story, 93, 94; variability of, 259.

Sparrow, vesper (Pooecetes gramineus), flight song of, 39; lark-like in color and markings, 40; wooed by a skylark, 40; low degree of variability in, 259.

Spring, the real beginning of, 51, 52.

Squirrel, gray, 75, 133.

Squirrel, red, nesting-material of, 20; a stupid, 125; and chestnuts, 132; and maple sap, 132; and green apples and pears, 133, 155, 251.

Squirrels, and chestnut burs, 3; their knowledge of nuts, 133; smelling with the whole body, 133.

Starling, red-shouldered, or red-winged blackbird (Agelaius phoeniceus), song of, 34.

Stevenson, Robert Louis, on the English blackbird's songs, 45.

Sumac, fruit of, 254.

Swallow, cliff (Petrochelidon lunifrons), nesting of, 155, 157.

Swallows, 93.

Swift, chimney (Chætura pelagica), change of nesting-site, 8; getting nesting-material, 8, 9; in the chimney, 9; a creature of the air, 9, 10; spring and fall congregations in large chimneys, 10-13; drumming in chimney, 183.

Swimming, 78, 79.

Sycamore, fruit of, 251.

Tanager, scarlet (Piranga erythromelas), nesting in a cherry tree, 6, 7.

Teaching among animals, 83-94, 233, 234.

Telepathy, 96-98.

Terns, 139.

Thoreau, Henry D., his "night-warbler," 42, 153, 195, 203.

Thrush, hermit (Hylocichla guttata pallasii), with an impediment, 116.

Thrush, song, in the Trossachs, 46; and wooden eggs, 227.