Dinosaurs may have been fierce predators but they had a respiratory system similar to modern birds such as the sparrow, scientists said on Wednesday. Subscribe to read this story ad-free Get unlimited ...

The Louisiana Department of Health on Monday reported the first human death in the U.S. related to the H5N1 bird flu virus. The CDC is also reporting high levels of acute respiratory illnesses ...

While the disease primarily affects birds, health experts say certain strains of the virus, especially H5N1, can occasionally ...

Birds are profoundly important animals. As predators, pollinators, seed dispersers, scavengers and ecosystem bioengineers, the world’s 11,000 species of birds play critical roles in the food chain and ...

At least four cattle herds in Nevada have tested positive for a strain of H5N1 bird flu never before seen in cows, state agriculture officials confirmed Wednesday, and respiratory symptoms like ...

The respiratory system allows air to reach the lungs, from which oxygen enters the blood and circulates to all body cells. This system also removes waste gases from the body and helps prevent disease ...