Problems for penguins

IT ISN’T EXACTLY the same as killing with kindness, but efforts to help protect king penguin populations on Antarctica’s Possession…

IT ISN’T EXACTLY the same as killing with kindness, but efforts to help protect king penguin populations on Antarctica’s Possession Island are actually causing harm.

A 10-year study of penguins that had been tagged with “flipper bands” as a way to identify individuals indicates that flipper banding actually reduces their long-term survival and reduces their reproduction.

The research published this morning in Natureargues that there are ethical objections to the continued use of flipper-banding. It also says the predictive value of data acquired from banded penguins was to a degree discredited. The researchers studied 50 banded and 50 non-banded king penguins ( Aptenodytes patagonicus) over the 10-year study period. The banded birds produced 39 per cent fewer chicks and had a 16 per cent lower survival, compared with non-banded birds.

The study refutes claims that penguins are able to adapt to the bands. It also says that the banded and non-banded birds actually respond differently to climate, with banded birds arriving later on Possession Island to breed.

Dick Ahlstrom

Dick Ahlstrom

Dick Ahlstrom, a contributor to The Irish Times, is the newspaper's former Science Editor.