Australian wildlife workers have launched an unprecedented effort to vaccinate wild populations of little penguins against the highly contagious H5N1 avian influenza.
Hundreds of thousands of tourists a year flock to viewing areas and boardwalks to watch the diminutive sea birds waddle ashore and along the beach in the evenings on the eastern coast’s Phillip Island.
The stars of this “penguin parade” are from a wild colony on the island, numbering up to 40,000 seabirds at the height of the breeding season in the southern hemisphere’s spring and summer.
Photo: Phillip Island Nature Parks, AFP
It is the world’s biggest single colony of little penguins, which have a life span of about six years with habitats in southern Australia and New Zealand.
Also known as fairy penguins, they are the tiniest species of the semi-aquatic sea birds, barely reaching knee height and weighing about a standard bag of sugar.
Now, like the rest of Australia’s wild bird population, they face the threat of H5N1, which breached the continental landmass for the first time in June and has since started to spread in local wildlife.
The virus was detected this month in a Phillip Island penguin that had died, the first infection in the colony by a pathogen that has caused severe disease and death in birds worldwide.
In response, wildlife teams started to vaccinate birds in the colony this week, said James Todd, chief biodiversity officer for Victoria, in which the island lies.
“This is unprecedented. There has been no vaccination of this scale in a wild population anywhere in the world,” Todd said. “Trying to vaccinate wild populations is almost impossible, partly because you need two doses of the vaccine.”
However, wildlife experts are very familiar with the little penguins’ burrows at Phillip Island and St Kilda, he said.
The birds, in turn, are accustomed to floodlights for the “penguin parade” tourist attraction, as well as being periodically handled by veterinarian scientists for monitoring of their health, he added.
Vaccination teams aim to inoculate about 5,000 little penguins closest to the visitor areas, Todd said, adding that the program would likely last weeks and months.
Ideally, the H5N1 vaccine should be administered in two doses with a gap of three-to-four weeks, he said.
“Given that we’re in a bit of a state of urgency here, experts have said that it’s okay to even think about you know one to two weeks,” he added.
Vaccination teams can pick up the penguins from their burrows and might try to corral some as they come ashore on the beach, using microchips to track those that have been given a shot, Todd said.
“They’re wild animals — they’ll squawk and try to, you know, peck you, and do all that sort of stuff — but as I said, the team down there are very used to handling these animals,” he said. “If you and I were doing it, we’d probably drop the thing straight away.”
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