- Cabanis's Bunting
- Canada Jay
- Cape Cormorant
- Cape Starling
- Cape Teal
- Capped Wheatear
- Chestnut-and-black Weaver
- Chestnut-backed Sparrow-Lark
- Chestnut-bellied Starling
- Cinereous Vulture
- Cirl Bunting
- Collared Pratincole
- Comb-crested Jacana
- Common Buzzard
- Common Eider
- Common Firecrest
- Common Goldeneye
- Common Greenshank
- Common Gull
- Common Kestrel
- Common Linnet
- Common Ostrich
- Common Reed Bunting
- Common Waxbill
- Compact Weaver
- Crescent Honeyeater
- Crested Lark
- Crested Pigeon
- Crested Tit
- Crimson-breasted Shrike
- Crimson Rosella
- Croaking Cisticola