(Song birds) can be migratory.Logical formLearned from12 sentences. Migratory birds can be long-distance.Logical formLearned from12 sentences. A flux can be migratory.Logical formLearned from12 sentences. Migratory birds may spread a flu.Logical formLearned from12 sentences. Migratory birds may spread a disease.Logical formLearned from12 sentences. Crossroads can be for migratory birds.Logical formLearned from12 sentences. (Bird flu) may be spreaded by migratory birds.Logical formLearned from11 sentences. Matters can be migratory.Logical formLearned from11 sentences. Beekeepings can be migratory.Logical formLearned from11 sentences. A response can be migratory.Logical formLearned from11 sentences. Insects can be migratory.Logical formLearned from11 sentences. Events can be migratory.Logical formLearned from11 sentences. An experience can be migratory.Logical formLearned from11 sentences. Families can be migratory.Logical formLearned from11 sentences. A capacity can be migratory.Logical formLearned from11 sentences.