| Terms for subject Ornithology (50 entries) |
| bultúr | Gyps (fulvus…) | |
| capall coille | Tetrao urogallus | |
| caróg dubh | Corvus corone | |
| cearc | Gallus gallus | |
| circín starraiceach | Alauda (arvensis …) | |
| clamhán | Buteo buteo | |
| cnagaire | Piciformes | |
| cnagaire dubh | Dryocopus martius | |
| cnagaire glas | Picus viridis | |
| colm | Columba (livia, palumbus …) | |
| colm aille | Columba livia | |
| colmán | Columba (livia, palumbus …) | |
| colu'r aille | Columba livia | |
| colúr | Columba (livia, palumbus …) | |
| corr | Ardea (cinerea…) | |
| cuach | Cuculus canorus | |
| eala | Cygnus (olor…) | |
| fabhcún | Falco (peregrinus …) | |
| faoileán | Larus (canus…) | |
| fiach dubh | Corvus corax |