- Cackling Goose
- Canada Goose
- Canada Jay
- Canada Warbler
- Canivet's Emerald
- Cape May Warbler
- Caribbean Dove
- Carolina Wren
- Caspian Tern
- Cattle Tyrant
- Cave Swallow
- Cedar Waxwing
- Chami Antpitta
- Chestnut-bellied Flowerpiercer
- Chestnut-breasted Chlorophonia
- Chestnut-capped Brushfinch
- Chestnut-capped Warbler
- Chestnut-colored Woodpecker
- Chestnut-crowned Antpitta
- Chestnut-headed Oropendola
- Chestnut-naped Antpitta
- Chestnut-sided Warbler
- Chestnut Wood Quail
- Chipping Sparrow
- Cinnamon-bellied Saltator
- Cinnamon Hummingbird
- Citreoline Trogon
- Clapper Rail
- Clay-colored Sparrow
- Clay-colored Thrush
- Cocoi Heron
- Colima Pygmy Owl
- Collared Aracari
- Collared Inca
- Collared Trogon
- Colombian Chachalaca
- Common Black Hawk
- Common Chlorospingus
- Common Gallinule
- Common Goldeneye
- Common Grackle
- Common Ground Dove
- Common Loon
- Common Merganser
- Common Nighthawk
- Common Potoo
- Common Starling
- Common Tern
- Common Tody-Flycatcher
- Common Yellowthroat
- Cooper's Hawk
- Coppery-headed Emerald
- Costa Rican Brushfinch
- Crescent-faced Antpitta
- Crested Ant Tanager
- Crested Caracara
- Crested Caracara (cheriway)
- Crested Owl
- Crimson-backed Tanager
- Crimson-collared Tanager
- Crimson-mantled Woodpecker
- Crimson-rumped Toucanet
- Crowned Woodnymph
- Cuban Blackbird
- Cuban Emerald
- Cuban Gnatcatcher
- Cuban Grassquit
- Cuban Green Woodpecker
- Cuban Oriole
- Cuban Pewee
- Cuban Pygmy Owl
- Cuban Tody
- Cuban Trogon
- Cuban Vireo