| buthraupis montana | Yes | species | eukaryota | vertebrates | species | 62159 | click here |
| cacatua leadbeateri | Yes | species | | | species | 471713 | click here |
| cairina moschata | Yes | species | eukaryota | vertebrates | species | 8855 | click here |
| callipepla gambelii | Yes | species | eukaryota | vertebrates | species | 67773 | click here |
| campephilus rubricollis | Yes | species | eukaryota | vertebrates | species | 381862 | click here |
| camptostoma obsoletum | Yes | species | eukaryota | vertebrates | species | 456367 | click here |
| campylorhynchus fasciatus | Yes | species | eukaryota | vertebrates | species | 221964 | click here |
| caracara plancus | Yes | species | eukaryota | vertebrates | species | 8951 | click here |
| cardellina pusilla | Yes | species | eukaryota | vertebrates | species | 142478 | click here |
| cardinalis cardinalis | Yes | species | eukaryota | vertebrates | species | 98964 | click here |
| carduelis cannabina | Yes | species | eukaryota | vertebrates | species | 160757 | click here |
| carduelis carduelis | Yes | species | eukaryota | vertebrates | species | 37600 | click here |
| carduelis chloris | Yes | species | eukaryota | vertebrates | species | 37601 | click here |
| carduelis corsicana | Yes | species | eukaryota | vertebrates | species | 632109 | click here |
| carpodacus erythrinus | Yes | species | eukaryota | vertebrates | species | 175930 | click here |
| carterornis chrysomela | Yes | species | eukaryota | vertebrates | species | 254560 | click here |
| caryothraustes canadensis | Yes | species | eukaryota | vertebrates | species | 460168 | click here |
| catamblyrhynchus diadema | Yes | species | eukaryota | vertebrates | species | 194941 | click here |
| catharus ustulatus | Yes | species | eukaryota | vertebrates | species | 91951 | click here |
| catherpes mexicanus | Yes | species | eukaryota | vertebrates | species | 241529 | click here |
| centropus sinensis | Yes | species | eukaryota | vertebrates | species | 57402 | click here |
| cercomacra cinerascens | Yes | species | eukaryota | vertebrates | species | 360201 | click here |
| ceyx azureus | Yes | species | | | species | 2231422 | click here |
| ceyx lecontei | Yes | species | eukaryota | vertebrates | species | 342359 | click here |
| ceyx lepidus | Yes | species | eukaryota | vertebrates | species | 325320 | click here |
| ceyx pictus | Yes | species | | | species | 570428 | click here |
| chalcophaps indica | Yes | species | eukaryota | vertebrates | species | 187108 | click here |
| chamaea fasciata | Yes | species | eukaryota | vertebrates | species | 190680 | click here |
| chelonoidis carbonarius | Yes | species | eukaryota | vertebrates | species | 50047 | click here |
| chelonoidis denticulatus | Yes | species | eukaryota | vertebrates | species | 101697 | click here |
| chiroxiphia boliviana | Yes | species | eukaryota | vertebrates | species | 649783 | click here |
| chiroxiphia pareola | Yes | species | eukaryota | vertebrates | species | 467132 | click here |
| chloroceryle amazona | Yes | species | eukaryota | vertebrates | species | 342361 | click here |
| chloroceryle americana | Yes | species | eukaryota | vertebrates | species | 57406 | click here |
| chloroceryle inda | Yes | species | eukaryota | vertebrates | species | 342360 | click here |
| chlorochrysa calliparaea | Yes | species | eukaryota | vertebrates | species | 62163 | click here |
| chlorophanes spiza | Yes | species | eukaryota | vertebrates | species | 62165 | click here |
| chlorospingus flavigularis | Yes | species | eukaryota | vertebrates | species | 166060 | click here |
| chlorospingus ophthalmicus | Yes | species | eukaryota | vertebrates | species | 166061 | click here |
| chlorothraupis carmioli | Yes | species | eukaryota | vertebrates | species | 62173 | click here |
| chondestes grammacus | Yes | species | eukaryota | vertebrates | species | 158616 | click here |
| chroicocephalus ridibundus | Yes | species | | | species | 1192867 | click here |
| chrysomma sinense | Yes | species | eukaryota | vertebrates | species | 201304 | click here |
| cicinnurus regius | Yes | species | eukaryota | vertebrates | species | 36263 | click here |
| cinclus cinclus | Yes | species | eukaryota | vertebrates | species | 127875 | click here |
| cinnyris souimanga | Yes | species | eukaryota | vertebrates | species | 234084 | click here |
| claravis pretiosa | Yes | species | eukaryota | vertebrates | species | 115590 | click here |
| climacteris picumnus | Yes | species | eukaryota | vertebrates | species | 175000 | click here |
| cnemotriccus fuscatus | Yes | species | eukaryota | vertebrates | species | 183540 | click here |
| coccothraustes coccothraustes | Yes | species | eukaryota | vertebrates | species | 37609 | click here |
| coeligena coeligena | Yes | species | eukaryota | vertebrates | species | 56650 | click here |
| coeligena iris | Yes | species | eukaryota | vertebrates | species | 56651 | click here |
| coeligena torquata | Yes | species | eukaryota | vertebrates | species | 170862 | click here |
| coereba flaveola | Yes | species | eukaryota | vertebrates | species | 87177 | click here |
| colaptes melanochloros | Yes | species | eukaryota | vertebrates | species | 367944 | click here |
| colibri thalassinus | Yes | species | eukaryota | vertebrates | species | 472798 | click here |
| colinus virginianus | Yes | species | eukaryota | vertebrates | species | 9014 | click here |
| colinus virginianus ridgwayi | Yes | subspecies | | | subspecies | 2542735 | click here |
| colluricincla megarhyncha | Yes | species | eukaryota | vertebrates | species | 156160 | click here |
| columba arquatrix | Yes | species | eukaryota | vertebrates | species | 177141 | click here |
| columba livia | Yes | species | eukaryota | vertebrates | species | 8932 | click here |
| columba malherbii | Yes | species | | | species | 1892168 | click here |
| columba oenas | Yes | species | eukaryota | vertebrates | species | 160229 | click here |
| columba palumbus | Yes | species | eukaryota | vertebrates | species | 8934 | click here |
| columbina buckleyi | Yes | species | | | species | 580600 | click here |
| columbina cruziana | Yes | species | eukaryota | vertebrates | species | 187109 | click here |
| columbina inca | Yes | species | eukaryota | vertebrates | species | 115616 | click here |
| columbina minuta | Yes | species | eukaryota | vertebrates | species | 115617 | click here |
| columbina passerina | Yes | species | eukaryota | vertebrates | species | 111974 | click here |
| columbina picui | Yes | species | eukaryota | vertebrates | species | 115618 | click here |
| columbina talpacoti | Yes | species | eukaryota | vertebrates | species | 504887 | click here |
| contopus sordidulus | Yes | species | eukaryota | vertebrates | species | 183522 | click here |
| copsychus malabaricus | Yes | species | eukaryota | vertebrates | species | 245052 | click here |
| copsychus saularis | Yes | species | eukaryota | vertebrates | species | 343929 | click here |
| coquillettidia aurites | Yes | species | eukaryota | invertebrates | species | 653291 | click here |
| coracias garrulus | Yes | species | eukaryota | vertebrates | species | 188338 | click here |
| corvus brachyrhynchos | Yes | species | eukaryota | vertebrates | species | 85066 | click here |
| corvus cornix cornix | Yes | subspecies | | | subspecies | 932674 | click here |
| corvus corone | Yes | species | eukaryota | vertebrates | species | 30422 | click here |
| corvus macrorhynchos | Yes | species | eukaryota | vertebrates | species | 36249 | click here |
| coryphistera alaudina | Yes | species | eukaryota | vertebrates | species | 183173 | click here |
| coryphospingus pileatus | Yes | species | eukaryota | vertebrates | species | 664758 | click here |
| cosmopsarus regius | Yes | species | eukaryota | vertebrates | species | 241739 | click here |
| coturnix japonica | Yes | species | eukaryota | vertebrates | species | 93934 | click here |
| cracticus nigrogularis | Yes | species | eukaryota | vertebrates | species | 459955 | click here |
| cracticus quoyi | Yes | species | eukaryota | vertebrates | species | 254525 | click here |
| creagrus furcatus | Yes | species | eukaryota | vertebrates | species | 128048 | click here |
| creurgops verticalis | Yes | species | eukaryota | vertebrates | species | 227875 | click here |
| crithagra rufobrunnea | Yes | species | | | species | 1105373 | click here |
| cryptospiza reichenovii | Yes | species | eukaryota | vertebrates | species | 221968 | click here |
| crypturellus obsoletus | Yes | species | eukaryota | vertebrates | species | 858303 | click here |
| culex pipiens | Yes | species | eukaryota | invertebrates | species | 7175 | click here |
| culex pipiens pallens | Yes | subspecies | eukaryota | invertebrates | subspecies | 42434 | click here |
| culicoides circumscriptus | Yes | species | eukaryota | invertebrates | species | 88398 | click here |
| culicoides newsteadi | Yes | species | eukaryota | invertebrates | species | 304239 | click here |
| culicoides obsoletus | Yes | species | eukaryota | invertebrates | species | 289301 | click here |
| culicoides paolae | Yes | species | | | species | 1494423 | click here |
| culicoides submaritimus | Yes | species | eukaryota | invertebrates | species | 309044 | click here |
| cyanerpes cyaneus | Yes | species | eukaryota | vertebrates | species | 357694 | click here |
| cyanistes caeruleus | Yes | species | eukaryota | vertebrates | species | 156563 | click here |