Breathe in. Breathe out. If you are a mammal, the breath “in” and “out” traveled through the same tube and stale and fresh air mixed together. Birds on the other hand are special—they possess air sacs ...
"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 ...
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 ...
Although more than 100 people have been infected with the H5N1 avian influenza virus, mostly from close contact with infected poultry, the fact that the virus does not spread easily from its ...
The ongoing human H7N9 influenza infections highlight the threat of emerging avian influenza viruses. In 2011, an avian H3N8 influenza virus isolated from moribund New England harbour seals was shown ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results