C Callipepla, genus [50] “ Gambelii [pl. 9], [45] “ squamata [pl. 19], [129] Caprimulgidæ, family [235] Carpodacus, genus [78] “ familiaris [pl. 13], [73] Cardinalis, genus [206] “ sinuatus [pl. 33], [204] Cardinella, genus [266] “ rubra [pl. 43], [265] Cathartes, genus [56] Ceryle, genus [254] Chamæa, genus [40] “ fasciata [pl. 7], [39] Chordeiles, genus [237] Circus, genus [108] Cotyle, genus [247] Culicivora, genus [164] “ mexicana [pl. 27], [163] Cyanocorax, genus [5] “ luxuosus [pl. 1], [1] Cypselus, genus [248] Cyrtonyx, genus [25] “ Massena [pl. 4], [21]
D Diomedea, genus [211] “ brachyura [pl. 50], [289] “ nigripes [pl. 35], [210] Dryotomus, genus [287] “ imperialis [pl. 49], [285]
E Elanus, genus [106] Emberiza, genus [153] “ bilineata [pl. 23], [150] Embernagra, genus [71] “ Blandingiana [pl. 12], [70]
F Failconidæ family [85] Falco genus [85], [122] “ polyagrus [pl. 16], [88], [121] Fissirostres [235]
G Geococcyx, genus [219] “ mexicanus [pl. 36], [213] Glaucidium, genus [189] Gymnokitta, genus [167] “ cyanocephala [pl. 28], [165]
H Halcyonidæ, family [253] Haliaetus, genus [37], [109] “ pelagicus [pl. 6], [31] Hierofalco, genus [89] Hirundinidæ, family [242] Hirundo, genus [242] Hypotriorchis, genus [90]
I Icterus, genus [43] “ cucullatus [pl. 8], [42] “ melanocephalus [pl. 21], [137] Ictinea, genus [106] Insessores, tribe [235]
L Larus, genus [29] “ Heermanni [pl. 5], [28] Lophophanes, genus [18] “ atricristatus [pl. 3], [13], [19]
M Melanerpes, genus [11] “ formicivorus [pl. 2], [7] “ thyroideus [pl. 32], [201] Morphnus, genus [114]
N Nauclerus, genus [105] Nyctale, genus [68], [185] “ Kirtlandii [pl. 11], [63], [187] Nyctea, genus [190]