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Nov., 1911 INDEX TO VOLUME XIII 217 Buteo borealis alascensis, 213 borealis calurus, 66, 73, 131, 135, 205 lineatus elegans, 161 swainsoni, 162, 209 Butorides virescens anthonyi, 35, 160 Buzzard, 44, 45 c Calamospiza melanocorys, 95 Calypte anna, 74, 132 Canvasback, 122, 130, 191, 192, 194, 195 Carpodacus cassini, 204, 205 mexicanus clementis, 32, 210 mexicanus frontalis, 68, 74, 82, 108, 132, 152, 162, 181 purpureus californicus, 120 Carriger, H. W. [with Ray, M. S.], an April day list of Calaveras Valley birds, 73 Catbird, 69, 108 Cathartes aura septentrionalis, 66, 131, 135, 152, 204 Cathartornis gracilis, 79 Catherpes mexicanus punctulatus, 111 Catoptrophorus semipalmatus inornatus, 152 Cedarbird, 107 Centrocercus urophasianus, 65 Cepphus colmnba, 174 Ceryle alcyon, 152, 204 Chaemepelia passerina pallescens, 54 Chaetura vauxi, 211 Chaffinch, 84 Chamaea fasciata henshawi, 30, 121, 153 fasciata internindia, 74 Charitonetta albeola, 130, 134 Chat, Long-tailed, 69, 74, 102 Chen hyperboreus, 103 Chewink, 101 Chickadee, Chestnut-backed, 121 Long-tailed, 69 Mountain, 205 Santa Cruz, 211 Chondestes grammacus strigatus, 68, 74, 95, 133 Chordeiles acutipennis texensis, 135, 160 virginianus, 101 virginianus henryi, 67 virginianus hesperis, 205 Ciconia maltha, 79 Cinclus mexicanus unicolor, 205 Circus hudsonius, 66, 103, 131, 166 Clangula clangula americana, 22 islandica, 50 Clay, C. I., some diving notes on cormorants, 138; the spotted owl in northern Califor- nia, 75 Coccyzus amedcanus, 97 americanus occidentalis, 66, 69 Coeligena clemenciae, 47 Colapres auratus luteus, 209 Colaptescafer collaris, 67, 74, 119, 132, 135, 163, 203, 204, 205, 209 Colinus virginianus, 65, 104 Colymbus nigricollis californicus, 134, 157 Condor, Andean, 79 California, 39, 79 Cooper Club Directory of Members, 143 Coot, 65, 152, 160 American, 131 Cormorant, Baird, 138, 178 Brandt, 32, 138, 178 Farallon, 129, 130, 134, 177, 179 Corvus brachyrhynchos hesperis,'67, 74, 132 corax sinuatus, 67, 132, 135, 152, 162, 167, 181, 210 Coturnicops noveboracensis, 108 Cowbird, 68, 95, 101, 103, 107, 181 Dwarf, 132, 135, 152, 161 Crane, Little Brown, 50 Sandhill, 103, 129, 130, 134 Crossbill, Mexican, 210 Red, 108 White-winged, 100 Crow, Blue, 44,. 93 Clarke, 93 Western, 67, 74, 132 Cuckoo, California, 19, 66, 69 Yellow-billed, 97 Curlew, 103 Hudsonian, 211 Long-billed, 152, 211 Cyanocephalus cyanocephalus, 75 Cyanocitta cristata, 104 stelleri carbonacea, 74 stelleri diademata, 35 stelleri frontalis, 119, 163, 203, 204, 205, 208 Cyphornis magnus, 117 Cypseloides niger borealis, 160 D Dafila acuta, 103, 130, 134, 152, 158, 186 Dawson, W. L., two species new to California, 167; another fortnight on the Famllones, 171 Dendragapus obscurus fuliginosus, 119 Dendrocygna bicolor, 158 Dendroica aestiva aestiva, 69, 107 aestiva brewster, 153, 205 aestiva rubiginosa, 182 auduboni auduboni, 37, 74, i33, 137, 210 auduboni nigrifrons, 37 coronata hooveri, 213 magnolia, 182 nigrescens, 137, 153 townsendi, 182 virens, 168, 182 Dickcissel, 100, 101 Diomedea nigripes, 151 Dipper, 205 Dolichonyx oryzivorus, 67, 75, 109, 211