Here's a bizarre science experiment: Researchers at the U.K.'s Birmingham University are fitting 50 wild penguins with heart monitors to measure the effects of climate change on their habits:

The 'guinea pig' penguins live on the Crozet Islands, in the southern Indian Ocean, about 1,500 miles north of the Antarctic.

The monitors record each penguin's heart rate, location, the surrounding pressure and hence water depth, and the temperature at the back of its throat, telling the scientists when it has swallowed a cold fish.

The birds, famously awkward and ungainly on land, are released back into the wild to go on their usual diving expeditions and caught again a few months later when they return to land to breed.

The scientists expect to find that the flightless birds are swimming and waddling further afield to find food. They'll compare these results to data from the control group, ten penguins that were run through their paces on treadmills while their vital stats were recorded.

So, what does a penguin on a treadmill look like? Click on the video below to find out: