An epidemiological study found that 56% of a large breeding colony of Caspian terns died from a 2023 outbreak of highly ...

More than half a colony of Caspian terns on a small island near Port Townsend died last year amid an outbreak of bird flu, underscoring the harsh effects the disease can have on wildlife.

Caspian terns are migratory and return to the Northwest in late April or May after wintering elsewhere, mostly in southern California and Mexico. They can live for 20 years or more.

Performing medical tests on colonies of herring gulls, black-crowned night herons and Caspian terns to see whether pollution is contributing to their health problems and low population numbers. For ...