ANN ARBOR, Mich.--The remains of a 30-foot-long predatory dinosaur discovered along the banks of Argentina's Rio Colorado is helping to unravel how birds evolved their unusual breathing system.

Recent evidence suggests that oxygen levels were suppressed worldwide 175 million to 275 million years ago and fell to precipitously low levels compared with today’s atmosphere, low enough to make ...

"This Springer imprint is published by Springer Nature"--Title page verso. BIRDS copy has bookplate: Smithsonian Institution Libraries, Nada Kramar Endowment Income Fund. 1. The evolution of birds ...

Bird Flu Alert In Tamil Nadu: After reports of large-scale crow deaths and growing fears over a possible outbreak of avian influenza, the Department of Animal Husbandry has issued a comprehensive ...