There A few years ago, Australian scientist Richard Major filmed a cockatoo in Sydney opening the lid of a closed trash can with its beak and foot to access the leftover food gold mine inside. He shared it with Barbara Klump and Lucy Aplin, both researchers at the Max Planck Institute for Animal Behavior in Germany - and they were immediately mesmerized. It was so exciting to 'To observe such a ingenious and innovative way to access a food resource, we immediately knew that we had to systematically study this unique foraging behavior, Klump, a postdoctoral fellow at the institute said in a statement. ofhurry. It's a five-step process for birds to open the lid of the bin, according to the study. The bird should open the lid with its beak, twist its neck to the side and jump to the edge of the tank, hold it open with its beak or foot, walk along the edge and finally open the lid. ul data-layout = list-hierarchical-xs > On Thursday, scientists published their findings in the journal Science , which found that iconic Australian bird species learned this foraging skill from one another. others and have been innovative in developing different ways of opening the bins. Read more It is difficult to demonstrate the evolution of new behaviors in animals for two reasons, said Major, senior researcher at the Australian Museum. First of all, it is difficult to detect the behaviors when they first occur because they start out as rare cases before spreading. Second, if populations in two different places behave differently, it is difficult to say whether this is due to a difference between the animals themselves or their environment. This is why the Sydney Sulfur-crested Cockatoo, a Very sociable parrot common in the cities of the east coast, provided a rare opportunity. The whole country uses the same standardized public trash can - and cockatoos live in one of Australia's largest cities, which means there are millions of locals who can help observe their behavior. . The study found that Sydney's Sulfur-crested Cockatoos learned from each other to lift the lids of garbage cans to feed. The research team launched a survey online asking Sydney residents if they had seen cockatoos lifting lids on trash cans to feed. Before 2018, this behavior had only been reported in three suburbs - but by the end of 2019, that number had climbed to 44 suburbs, the study found.not at random. These results show that the animals did learn the behavior of other cockatoos nearby, Klump said in the release. The researchers also marked the cockatoos with paint dots to find out which had learned to open trash cans, which turned out to be only 10% of birds. The other cockatoos would wait, then help them once the bins are opened, and not all birds open the bins the same - the team found that regional subcultures had emerged among the cockatoos, which had distinct styles and approaches. For example, in late 2018, a cockatoo from North Sydney reinvented the technique by opening the lids in a different way, prompting birds from neighboring neighborhoods to copy the behavior. Kangaroos can ask humans for help, new study finds There are different ways to do this (open the lids), said Major. The fact that the groups developed different ways of doing it was proof that they learned each other's behavior, rather than solving them.re the puzzle independently. It may seem like a trivial finding - that birds can open lids differently - but it is important because it proves that animals can learn, share and develop subcultures, Major said. He compared it to human dance, how each culture has its own, and how geographically close places can have more similar dance styles than in distant lands. also sheds more light on the evolution of animals in urban centers. There are always winners and losers as cities expand and land use changes, Major said. - and animals capable of adapting to new environments appear as the winners. There are many other species that feed, especially the larger ibis, known as the garbage chicken ,digging in the city's garbage. But it 's easy for an ibis to see food in a trash can and take food out of it, Major said. For a cockatoo to lift a trash can to find food, this is another level of puzzle solving. Cockatoos expand their diet, so they are able to exploit opportunities in urban areas he added. I hope our research will help us learn to live with them as well as they learn to live with us.