Bird flu is changing rapidly, increasing the chances of more humans getting sick. Arizona must do more now to contain the ...

Biologists treat sick and injured condors in a remote "hospital" in northern Arizona. The birds also receive vaccines to fight the avian flu. The condors ingest lead ammunition when they eat ...

Neuroscientists at the University of Arizona have found a link between vocal changes and the aging brain in zebra finch songbirds, which could help lead to earlier diagnoses for disorders such as ...