Migratory birds can be a canary.Logical formLearned from3 sentences. (Shorebird species) can be migratory.Logical formLearned from3 sentences. An invasion can be migratory.Logical formLearned from3 sentences. An owl can be migratory.Logical formLearned from3 sentences. Fish can be migratory.Logical formLearned from3 sentences. Havens can be for migratory birds.Logical formLearned from3 sentences. Barriers can be migratory.Logical formLearned from3 sentences. A place can be for hundreds of thousands of migratory birds.Logical formLearned from3 sentences. Counterparts can be migratory.Logical formLearned from3 sentences. Migratory birds can be in a spring.Logical formLearned from3 sentences. Beasts can be migratory.Logical formLearned from3 sentences. Travels can be migratory.Logical formLearned from3 sentences. A role of migratory birds may be understood.Logical formLearned from3 sentences. Avian influenza can be through migratory birds.Logical formLearned from3 sentences. Migratory birds may mix with birds.Logical formLearned from3 sentences.