Migratory birds can be on an island.Logical formLearned from4 sentences. Migratory birds may be found dead.Logical formLearned from4 sentences. Some migratory birds may die from a virus.Logical formLearned from4 sentences. Presence of migratory birds can be (tourist attraction).Logical formLearned from4 sentences. A drop can be from a migratory bird.Logical formLearned from4 sentences. A crisis can be migratory.Logical formLearned from4 sentences. Migratory birds can be from regions.Logical formLearned from3 sentences. A rise can be among migratory birds.Logical formLearned from3 sentences. Millions of migratory birds may fly to climes.Logical formLearned from3 sentences. Migratory birds may spread a virus.Logical formLearned from3 sentences. Stopovers can be for migratory birds.Logical formLearned from3 sentences. Access can be to migratory birds.Logical formLearned from3 sentences. A route may pertain-to migratory birds.Logical formLearned from3 sentences. Groups can be constituted-of-or-filled-with migratory birds.Logical formLearned from3 sentences. Deaths can be among migratory birds.Logical formLearned from3 sentences.