Scientists have studied bird migration for centuries, but it remains one of nature's great mysteries. (sciencedaily.com)
Shifts in bird migrations create flu strains These regular precipitation patterns change how migratory birds interact. (scientificamerican.com)
That includes records of bird migration patterns and the dates that cherry trees bloom, as well as analyses of air bubbles sealed inside glacial ice cores and of the shells of foraminifera, single - celled sea creatures. (dawnpub.com)