The Tristan albatrosses along with the Atlantic petrels on Gough Island are being threatened to extinction! Yes, the hordes of giant mice are devouring the chicks harming the breeding success of the endangered albatrosses.
Gough Island is located thousand of miles (1,600 kilometers) off the coast of South Africa in the British territory. With the common house mice being introduced to the island more than a century ago, they have grown to sizes three times larger than their normal counterpart. The invasive giant rodents have by now likely numbered to more than a million.
According to the researchers, video cameras have revealed the first hard evidence that the mice previously thought to be harmless to seabirds are capable of attacking prey more than 300 times their weight.
It is concluded as, a Tristan albatross chick can grow to nearly three feet (one meter) tall and can weigh up to 22 pounds (10 kilograms) — or even about as much as a turkey! But, surprisingly, the Gough Island mice which are devouring the chicks to extinction weigh just 1.2 ounces (35 grams) on average!
It is found that, while the seabird chicks are able to defend themselves from other birds, they don’t seem to be programmed to fend off novel predators like mice.