Australian wildlife workers are launching an unprecedented effort to vaccinate wild little penguins against H5N1 avian influenza, aiming to shield the birds from a highly contagious virus.

The push comes as concerns rise about the impact of H5N1 on vulnerable seabird populations. Reporting from different outlets frames the campaign as a rapid, emergency-style response that uses vaccination to reduce the risk of outbreaks in the wild. One outlet highlights the scale and novelty of vaccinating wild penguin populations rather than relying only on surveillance and treatment after cases are detected.

While details such as exact locations, timing, and deployment methods are not provided in the supplied excerpts, both outlets describe the same core development: Australia is moving quickly to protect little penguins from H5N1 through immunization efforts directed at wild birds.