e, 39, 157.

Halfway House, 47, 74, 75, 76.

Harrier, marsh, 99.

Herbert, George, 59.

Hawk, pigeon, 214.

House-finch, 119, 127, 133, 181-183, 217.

Humming-bird, 25.
broad-tailed, 73, 103-109, 112-114, 200, 209, 213, 217, 230, 260.
ruby-throated, 106.
rufous, 113.

Indigo-bird, 25, 154, 155, 178.

Jack-rabbit, 99.

Jay, blue, 24, 25, 26, 27, 149, 151, 153.
long-crested, 25, 119, 133, 149-151, 154, 189, 230, 260, 279-281.
mountain, 71, 119, 151-154, 205, 210, 233, 234, 261.
Woodhouse's, 154.

Junco, slate-colored, 75.
gray-headed, 67, 74, 75, 119, 209, 212, 231, 235, 254, 255, 259, 261.

Kelso, Mount, 232, 233, 238, 253, 254, 262.

Killdeer, 205, 270.

Kingbird, 97.

Kingfisher, 119, 282.

Kinglet, ruby-crowned, 64-66, 72, 119, 211, 216, 235, 254, 261.

Lark, desert horned, 49, 84-89, 186, 264, 268-270.
horned, 85.
pallid horned, 86.
prairie horned, 86.

Leadville, 38, 126, 127, 183, 202, 271.

Leucosticte, brown-capped, 22, 27, 59, 60, 125, 240, 241, 244, 248,
251, 252, 254, 262.

Lowell, James Russell, 59, 289.

Magpie, 25, 40-43, 72, 119, 122, 133, 188, 270.

Manitou, 31, 32, 36, 38, 47, 75, 76, 79, 140, 178.

Martin, purple, 90.

Meadow-lark, eastern, 26, 90-95.
western, 22, 26, 90-95, 133, 160, 186, 187, 192, 264, 267, 290.

Merriam, Dr. C. Hart, 113.

Migration, 19-23, 51, 52, 63, 65, 66, 124, 277, 278.

Mocking-bird, 98, 301, 302.

Moraine Lake, 61, 66-73, 146.

Muir, John, 172, 173.

Nighthawk, eastern, 191.
western, 24, 119, 129, 190, 191, 262.

Nutcracker (also crow) Clark's, 25, 67, 71, 72, 119, 122.

Nuthatch, pygmy, 119, 174, 279.
white-breasted, 119.

Ohio, 21, 65, 141, 215.

Oriole, 25.
Baltimore, 33-35.
Bullock's 33-35, 97, 121, 192, 290.
orchard, 34.

Owl, burrowing, 178-180.

Phoebe, 125.
Say's, 125, 131, 270, 271.

Pike's Peak, 21, 26, 31, 38, 66, 71, 73, 83, 103, 104, 110, 129, 134,
146, 152, 159, 224, 239, 250, 252, 262, 281.
ascent of, 47, 56-58.
descent of, 49-56, 58-79.
summit, 47-49, 58, 59, 60.

Pipit, American, 27, 49-52, 125, 239, 244, 254, 262.

Ptarmigan, white-tailed, 60, 248.

Pueblo, 117, 183.

Raven, 25, 53, 125.

Red Cliff, 38, 40, 109, 117, 120, 183.

Redstart, 184.

Rexford, Eben E., 192.

Ridgway, Robert, 24, 94, 136, 285, 303.

Roberts, Charles G. D., 69.

Robin, eastern,