| Terms for subject Ornithology (109 entries) |
| acuile | eryr (eryr euraid) | |
| agaçon | brân goesgoch | |
| airon | crëyr (crëyr glas) | |
| badascule | sgrech y coed | |
| barbezuan | tylluan wen | |
| cagnŕs | gwalch marthin | |
| cagne | bwncath | |
| catůs | tylluan frech | |
| cesen | alarch | |
| cheche | pioden | |
| cicogne | ciconia | |
| cign | alarch | |
| cisile | gwennol | |
| civuite | tylluan fach | |
| cocâl | gwylan (y gweunydd) | |
| colomp | colomen | |
| colomp | ysguthan | |
| colomp salvadi | colomen y graig | |
| cornete | jac-do | |
| cornete | jac-y-do |