Last Call: Bird Decline and the Threat of Extinction

The world has lost, or is on the brink of losing, many remarkable bird species. Meanwhile, many once-numerous bird populations are rapidly shrinking. In North America alone, research led by Cornell scientists has shown that the continent’s total number of birds has declined by an estimated 2.9 billion adults over just a few decades, reflecting widespread pressures such as habitat loss, climate change, pollution, and invasive species. A collaboration among Cornell University Library, the Macaulay Library at the Cornell Lab of Ornithology, and the Cornell Museum of Vertebrates, the exhibit Last