Birds migrate away from diseases

In a unique study, researchers at Lund University in Sweden have mapped the origins of migratory birds. They used the results to investigate and discover major differences in the immune systems of sedentary and migratory ...

Migratory river fish populations down 76% since 1970

Populations of migratory river fish collapsed by 76 percent on average in the last 50 years, according to a report by conservation groups Tuesday, warning the "catastrophic" declines could impact people and ecosystems around ...

Bird deaths in Germany continue

Along with climate change, species extinction is one of the greatest threats to life on earth. For about 50 years, researchers have been documenting the population trends of different animal and plant groups in so-called ...

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