Savings birds in Busan . JANUARY 10, 2013 06:15. . A bird saver is a sticker made in the image of a predatory bird. An Eco Center source in the Nakdong River estuary on Eulsuk Island in Busan said, “After posting bird savers on the windows of tall buildings, the number of birds crashing into the windows has significantly decreased.” Korea’s largest port city manufactured and distributed a large volume of bird savers last year.