Bird flu is spreading. Your backyard feeder could make it worse

Outdoor bird feeding is a beloved pastime for many Australians, with roughly half of households partaking in this activity on a regular basis. However, this common practice may inadvertently contribute to the spread of a deadly strain of bird flu known as H5N1. This virus has already caused significant declines in wild bird and mammal populations globally, and it is now also affecting Australia, where it recently claimed over 1,000 crested terns and a long-nosed fur seal – the first known case in a mainland mammal.

While bird feeding can be a rewarding hobby for enthusiasts, it poses considerable risks to both avian species and humans. At feeding stations, a diverse array of bird species gather in close proximity, increasing the likelihood of disease transmission. These gatherings can create a "superspreader" event, where the H5N1 virus rapidly spreads among the birds that congregate there.

Consequently, backyard feeders may inadvertently become hubs for disease transmission, potentially leading to further outbreaks and exacerbating the current bird flu crisis in Australia.

Feeding wild birds may also indirectly impact other animals, such as scavengers like possums and foxes, which can become exposed to the virus while consuming infected bird carcasses. Moreover, humans who come into contact with infected wildlife, particularly wildlife carers and veterinarians, face a small but real risk of contracting H5N1, although human infection is generally mild.

To minimize the potential dangers associated with backyard bird feeding, experts recommend adopting a safer approach. The most effective strategy is to cease feeding birds altogether, allowing them to forage for their natural food sources and reducing the likelihood of disease transmission. If feeding must continue, it is crucial to implement the following precautions: limit the amount of food offered to avoid attracting large numbers of birds, refrain from hand-feeding to maintain a safe distance from birds, and regularly clean all feeding equipment and surfaces using domestic bleach to prevent the spread of the virus.

By taking these measures, bird enthusiasts can enjoy their hobby while safeguarding both their avian companions and the wider community from the potentially devastating effects of H5N1.