Isle of Man Wallabies Devastate Ballaugh Curraghs
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- Red-necked wallabies that escaped a wildlife park in the 1960s now number roughly 800 in the Isle of Man's Ballaugh Curraghs marshland, having nibbled rare understorey plants — royal fern, common wintergreen, ivy, angelica and meadowsweet — down to bare soil.
- The Ballaugh Curraghs was designated a wetland site of international importance in 2006 when the wallaby footprint was still light, but author Tim Earl reports it would now struggle to qualify as key species have been eaten or disturbed.
- Wallabies are vectors of toxoplasmosis, a parasite that can cause spontaneous abortion in women, and liver fluke has been found in postmortems of animals hit by cars — health risks that are eroding the animals' lovable image among Manx residents.
- A string of traffic accidents has been caused by drivers swerving to avoid wallabies, and organisers of the Isle of Man TT motorcycle races fear a wallaby hopping into the path of a high-speed rider.
- A nearby field that once hosted a winter roost of more than 100 hen harriers now hosts hundreds of wallabies grazing nightly, and the birds have disappeared from the site.
- The wallaby population itself is not thriving despite its growth, with postmortems revealing inbreeding and a poor diet in the expanding herd.
- The Manx Wildlife Trust is drafting a management policy balancing animal welfare, economic concerns and local ecosystems, but Earl concludes the wallabies are likely here to stay.
Why it matters: The Ballaugh Curraghs' status as a wetland of international importance — granted in 2006 when the wallaby population was still small — is now in jeopardy, and the Manx Wildlife Trust faces an unusually thorny policy challenge: there is no appetite for a cull of a beloved species, yet a 100-strong hen harrier roost has already been lost and rare plants are gone from the understorey, with little sign the wallabies' ecological pressure will ease on its own.
