69.
lying in wait for prey, 141.
nesting site, 28, 71.
notes, 69.
old birds poisoned (?), 70.
rescuing the young, 71-73.
young orphans, inherited instincts, 75, 76, 78, 79;
notes, 78.

Woodpecker, Red-headed, 66, 69.

Wood rat,
in chaparral, 55.

Wren, 9-10.

Wren, Vigors's, 170-174.
linnets quarreling over materials, 171.
nesting site, 171.
young buried alive by linnets (?), 172-174.

Wren, Western House, 20-37, 65, 67, 69, 81, 84, 112, 117, 123, 160,
219.
building, 22, 25, 30, 96, 128.
common birds, 95.
feeding young on insects, 31.
nesting takes six weeks, 35.
nests in sycamore holes, 22, 128.
odd nesting sites, 95.
song, 22, 30, 96, 97.
tremulous motion of wings, 30, 33.

Yellow-bird. See Goldfinch.

Young birds,
Bluebird, 185.
Brewer's Blackbird, 87.
Burrowing Owl, 11-12.
Bush-tit, 28, 110, 111.
California Jay, 85.
California Woodpecker, 69-80.
feather tracts, 79.
fed at long intervals, 155.
fed on insects, 31, 36, 76, 82.
first flights, 36, 73-74, 88, 156.
Gnatcatchers, 63-64.
Horned Owl, 9.
Hummingbird, 23, 24, 88, 155-157, 217, 219.
interest in each other, 78, 79.
Lazuli Bunting, 189-193, 217;
adopted by wren-tit, 189-193.
Mourning Dove, 47.
Owl, 137.
Sparrow Hawk, 135;
subdued on leaving nest, 36;
time kept in nest, 69.
Titmouse, 182-183.
Vigors's Wren, 171, 172, 174.
Western House Wren, 33-37.

INDEX TO ILLUSTRATIONS.

Bee-birds, 13.

Blackbird, Brewer's, 13.

Buntings, Lazuli (old and young), 189.

Bush-tits (birds and nest), 104.

Bush-tit (nest in oak), 108.

Chewink, California (head), 93.

Chewink, Eastern (head), 93.

Chewink, Green-tailed (head), 163.

Eucalyptus Avenue, showing pollarded trees, 212.

Eucalyptus Wood stored for Market in a Eucalyptus Grove, 214.

Gnatcatcher, Western (birds and nest), 39.

Grosbeak, Black-headed (head), 8.

Grosbeak, Rose-breasted (head), 8.

Hummingbird, Black-chinned (nest), 157.

Hummingbird, Black-chinned (on nest), 148.

Mountain Billy Deserted, 220.

Mountain Billy under the Gnatcatcher's Oak, frontispiece.

Oaks, Live, 160.

Oriole, Arizona Hooded (head), 89.

Oriole, Baltimore, Eastern (head), 89.

Phainopepla's Nest in Oak Brush, 198