| (subclass Bird WarmBloodedVertebrate) | Merge.kif 14583-14583 | |
| (subclass Poultry Bird) | Mid-level-ontology.kif 20223-20223 | |
| (subclass Owl Bird) | Mid-level-ontology.kif 20254-20254 | |
| (subclass Pigeon Bird) | Mid-level-ontology.kif 20258-20258 | |
| (subclass Vulture Bird) | Mid-level-ontology.kif 20261-20261 | |
| (subclass Parrot Bird) | Mid-level-ontology.kif 30436-30436 | |
| (subclass QuailBird Bird) | Food.kif 2049-2049 |
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