text: Scientists Puzzled by Synchrony of Migratory Birds (Reuters) Reuters - They rarely see each other, spend\winters in different countries and don't communicate for long\periods but pairs of a species of Icelandic migratory birds\know exactly when to return home to breed.
inputs: Scientists Puzzled by Synchrony of Migratory Birds (Reuters) Reuters - They rarely see each other, spend\winters in different countries and don't communicate for long\periods but pairs of a species of Icelandic migratory birds\know exactly when to return home to breed.