Migratory birds may be killed by a virus.Logical formLearned from5 sentences. A threat can be to migratory birds.Logical formLearned from5 sentences. A (way station) can be for migratory birds.Logical formLearned from5 sentences. A flamingo can be migratory.Logical formLearned from5 sentences. A virus may come with migratory birds.Logical formLearned from5 sentences. An autumn can be around some migratory birds.Logical formLearned from5 sentences. A site can be migratory.Logical formLearned from5 sentences. A flock of migratory birds can be lethal.Logical formLearned from5 sentences. Agriculture can be migratory.Logical formLearned from5 sentences. Wetlands can be for migratory birds.Logical formLearned from4 sentences. Controls can be migratory.Logical formLearned from4 sentences. Migratory birds may carry an illness.Logical formLearned from4 sentences. Habitats can be constituted-of-or-filled-with migratory birds.Logical formLearned from4 sentences. Ancestors can be migratory.Logical formLearned from4 sentences. Information can be about migratory birds.Logical formLearned from4 sentences.