| (subclass Bird WarmBloodedVertebrate) | Merge.kif 14561-14561 | |
| (subclass Poultry Bird) | Mid-level-ontology.kif 20224-20224 | |
| (subclass Owl Bird) | Mid-level-ontology.kif 20255-20255 | |
| (subclass Pigeon Bird) | Mid-level-ontology.kif 20259-20259 | |
| (subclass Vulture Bird) | Mid-level-ontology.kif 20262-20262 | |
| (subclass Parrot Bird) | Mid-level-ontology.kif 30448-30448 | |
| (subclass QuailBird Bird) | Food.kif 2049-2049 |
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