News

MADISON, Wis. — The U.S. Geological Survey, together with the U.S. Fish and Wildlife Service and the University of Wisconsin–Madison, today announced...

Highly pathogenic avian influenza H5N1 virus (HPAIv) has been present in North America since its first detection in wild birds in November 2021...

Case History: An adult female, 1.165 kg, Great-horned Owl was found dead near a golf course in Arizona, USA.  

Case History: A juvenile male 7.05 kg Common Raccoon (Procyon lotor) was found dead on a prairie in Wisconsin, USA, in October 2006. Several other...

Case History: In October of 2022, a morbidity and mortality event in Canada Geese (Branta canadensis) was reported at a retention pond in Wisconsin...

Case History: In August, in a popular fishing lake in Alaska, USA, one Pacific loon (Gavia pacifica) chick was noticed floating head down in the water...

Case History: After a winter storm, over a hundred Brazilian Free-tailed Bats (Tadarida brasiliensis) were found dead in Texas, USA and several bats...

Bats play important roles in ecosystems around the world, but bat populations are at risk from disease, development, and more. USGS scientists are...

HONOLULU — Scientists found new methods that may help control an invasive anemone species threatening valuable coral reefs in the Central Pacific...

Case History: During a spring mortality event on a wildlife refuge in Ohio, USA, 15 muskrats (Ondatra zibethicus) and six beavers (Castor canadensis)...