People in Australia have started an 'arms race' with cockatoos over garbage.
In the case of the Sydney neighborhoods, the consequences of the"war" isn't quite so extreme, with the main gripe of the humans being that the cockatoos spread garbage around the road. Their bins can't simply be sealed shut, as an automated arm on the garbage truck needs to be able to swing the bin open.
According to the paper, locals attempted to keep the birds out by other means, including putting bricks on top of their bin lids, blocking the hinges with sticks, and using ropes to prevent the lid from opening, but the cockatoos figured out a way around each time. This knowledge also appears to spread within the social structure of the birds, with others learning how to break into the bins by observing.
"We could actually show that this is a cultural trait," lead author Barbara Klump, a behavioral ecologist at the Max Planck Institute of Animal Behavior in Germany, said in a statement."The cockatoos learn the behavior from observing other cockatoos and within each group they sort of have their own special technique, so across a wide geographic range the techniques are more dissimilar.
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