A brain may pertain-to a migratory bird.Logical formLearned from1 sentences. Waves may interfere with a magnetic compass of migratory birds.Logical formLearned from1 sentences. A battle may go for migratory birds.Logical formLearned from1 sentences. Great whites can be migratory.Logical formLearned from1 sentences. A dimension can be migratory.Logical formLearned from1 sentences. Routes may coincide with (flight paths) of migratory birds.Logical formLearned from1 sentences. A (spring waterfowl) can be migratory.Logical formLearned from1 sentences. Stragglers can be migratory.Logical formLearned from1 sentences. Migratory birds can be in danger.Logical formLearned from1 sentences. Migratory birds may make (pit stops).Logical formLearned from1 sentences. Songbirds can be among migratory birds.Logical formLearned from1 sentences. Migratory birds can be waterfowl.Logical formLearned from1 sentences. A world may target migratory birds.Logical formLearned from1 sentences. A barrier can be for migratory birds.Logical formLearned from1 sentences. Migratory waterfowl can be common carriers of avian flu.Logical formLearned from1 sentences.