How bird movements are helping researchers track a global virus

Bird movements are proving invaluable for researchers tracking the global spread of a highly virulent avian influenza strain, HPAI H5N1. This strain has recently been detected on Australian shores, prompting scientists at Deakin University to study the disease's potential impact on wildlife. Dr. Sara Ryding, a researcher at Deakin's Center for Marine Science, has been focusing on the movements and behavior of migratory shorebirds, which are particularly susceptible to the virus.

Her research, co-authored with Dr. Tobias Ross and Professor Marcel Klaassen, explores how these birds may be vulnerable to the HPAI H5N1 strain. The highly pathogenic nature of this virus can cause severe respiratory and gastrointestinal infections in birds, and its spread is often driven by the migratory patterns of wild birds.

Certain species, such as seabirds, pink-eared ducks, birds of prey, and scavengers like ravens and magpies, are at higher risk of exposure due to their behaviors and environments. The virus has already been detected in various Australian species, including greater crested terns, seals, and dolphins. While some bird species show the ability to develop antibodies after exposure, making them more resistant if re-infected, monitoring the virus's spread remains challenging due to Australia's vast size and extensive coastlines.

Citizen scientists have played a crucial role in identifying cases, and their continued involvement is vital for understanding the virus's impacts. However, people are advised not to handle sick or dead birds, but instead report any sightings to the 24-hour Emergency Animal Disease Hotline. Understanding bird movements and behaviors is essential for tracking the spread of this virus and implementing effective surveillance measures in Australia.