Once used to deliver messages, these days pigeons are often reviled as urban pests.
원문출처 : https://www.cnn.com/2019/11/14/europe/pigeon-toes-hair-study-scli-intl-scn/index.html
원문출처 : https://www.cnn.com/2019/11/14/europe/pigeon-toes-hair-study-scli-intl-scn/index.html