WASHINGTON (AP) — A few years ago, a Sydney scientist noticed a sulfur-crested cockatoo opening his trash bin. Not every resident would be thrilled, but ornithologist Richard Major was impressed by the ingenuity. It’s quite a feat for a bird to grasp a bin lid with its beak, pry it open, then shuffle far enough along the bin's edge that the lid falls backward – revealing edible trash treasures inside. Intrigued, Major teamed up with researchers in Germany to study how many cockatoos learned this trick. In early 2018, they found from a survey of residents that birds in three Sydney suburbs had mastered the novel foraging technique. By the end of 2019, birds were lifting bins in 44 suburbs. “
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