LYMAN: A few years ago, researchers from the Australian National University in Canberra, were studying sulfur-crested cockatoos in an urban environment, when they noticed an unusual and surprising behavior, even for these notoriously intelligent members of the parrot family. They saw the birds using a drinking fountain.
After local park rangers told the scientists that this was a regular behavior for the parrots, the researchers set up cameras in the Charlie Bal Reserve to capture video of the birds’ fountain drinking behavior.

The scientists observed that the cockatoos gripped the fountain with one foot, and twisted the handle with their other foot, releasing flowing water. The thirsty birds then leaned to the side with their body before tilting back to drink.

In their recently published findings, the research team reported that about 70 percent of the local population of cockatoos they studied attempted to use the fountains, and half of them were successful. Lead author Lucy Aplin said that the widespread nature of the fountain drinking behavior suggests that this may be a local cultural tradition among the cockatoos.
Aplin noted the birds congregate at fountains, and patiently wait their turn to get a drink, sometimes waiting as long as 10 minutes to quench their thirst.

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The scientists hypothesize that the fountains are a safe, relatively predator-free place to rehydrate, or maybe drinking from a communal fountain promotes social cohesion. “Or maybe the water just tastes better than the contents of a muddy creek.”

That’s this week’s note on emerging science. I’m Don Lyman.