- Campo Flicker
- Canada Goose
- Cape Eagle-Owl
- Capped Heron
- Carbonated Sierra Finch
- Carrion Crow
- Cattle Tyrant
- Chaco Chachalaca
- Chalk-browed Mockingbird
- Changeable Hawk-Eagle
- Channel-billed Toucan
- Chestnut-backed Owlet
- Chestnut-backed Sparrow-Lark
- Chestnut-bellied Guan
- Chestnut-bellied Seed Finch
- Chestnut-eared Aracari
- Chestnut-headed Bee-eater
- Chestnut-headed Tesia
- Chestnut-naped Spurfowl
- Chilean Flicker
- Chimango Caracara
- Chopi Blackbird
- Chubb's Cisticola
- Chukar Partridge
- Cinereous Vulture
- Cinnamon Bracken Warbler
- Citrine Wagtail
- Clapperton's Spurfowl
- Cocoi Heron
- Collared Kingfisher
- Collared Pratincole
- Common Blackbird
- Common Bulbul
- Common Buzzard
- Common Chiffchaff
- Common Cuckoo
- Common Emerald Dove
- Common Iora
- Common Kestrel
- Common Kingfisher
- Common Linnet
- Common Merganser
- Common Myna
- Common Pochard
- Common Reed Bunting
- Common Ringed Plover
- Common Sandpiper
- Common Swift
- Common Tailorbird
- Common Tody-Flycatcher
- Common Whitethroat
- Common Wood Pigeon
- Corn Bunting
- Correndera Pipit
- Coscoroba Swan
- Crab-plover
- Crane Hawk
- Crested Black Tyrant
- Crested Caracara
- Crested Duck
- Crested Lark
- Crested Oropendola
- Crested Serpent Eagle
- Crested Treeswift
- Crimson-rumped Waxbill
- Crowned Lapwing
- Curlew Sandpiper
- Cut-throat Finch