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The Burmese python has a built-in compass that allows it to slither home in a near-straight
line even if released dozens of kilometres away, researchers said Wednesday. Capable
of growing over five metres (16 feet) long, pythons are among the world's largest snakes.
Although native to South and Southeast Asia, the snakes have taken up residence in South
Florida's Everglades National Park, possibly after being released as unwanted pets. They
have adapted so well to their new habitat that they now pose a serious threat to several
species which they hunt as prey. Scientists captured six of the pythons in the Everglades,
placed them in sealed, plastic containers, and drove them to locations between 21 and
36 kilometres (13-22 miles) away. They implanted radio trackers in the animals and followed
their movements with GPS readings from a small fixed-wing plane - measuring their direction
and speed. All the snakes immediately oriented themselves towards the place where they were
captured, with five of the six returning to within five kilometres (three miles) of that
spot. The sixth veered somewhat off course as it was nearing its destination. The snakes
travelled between 94 and 296 days, displaying "high motivation to reach home locations",
according to the study, published in the Royal Society journal Biology Letters. "This study
provides evidence that Burmese pythons have navigational map and compass senses," the
authors wrote. No other snake species has yet been shown to possess a similar homing
ability. Such navigational skills suggest the python has a razor-sharp sense of territoriality.
This could help combat the species in places where it is unwanted by predicting where the
snake is likely to spread. Burmese pythons eat everything from tiny birds to deer and
even alligators. They swallow their food whole.